Use std namespace.

I had to rename distance() (in coord.h) to distance2() because it conflicts
with the STL function to compare 2 iterators. Not a bad change given how it
returns the square of the distance anyway.
I also had to rename the message global variable (in message.cc) to buffer.

I tried to fix and improve the coding style has much as I could, but I
probably missed a few given how huge and tedious it is.

I also didn't touch crawl-gdb.py, and the stuff in prebuilt, rltiles/tool
and util/levcomp.*, because I have no clue about those.

1 files changed, 38 insertions, 42 deletions

diff --git a/crawl-ref/source/externs.h b/crawl-ref/source/externs.h
index 19b493f623..ba30607345 100644
--- a/crawl-ref/source/externs.h
+++ b/crawl-ref/source/externs.h
@@ -234,7 +234,7 @@ struct coord_def
 
     int rdist() const
     {
-        return std::max(std::abs(x), std::abs(y));
+        return max(::abs(x), ::abs(y));
     }
 
     bool origin() const
@@ -290,8 +290,8 @@ struct cloud_struct
     killer_type   killer;
     mid_t         source;
     int           colour;
-    std::string   name;
-    std::string   tile;
+    string        name;
+    string        tile;
     int           excl_rad;
 
     cloud_struct() : pos(), type(CLOUD_NONE), decay(0), spread_rate(0),
@@ -307,8 +307,7 @@ struct cloud_struct
     void set_whose(kill_category _whose);
     void set_killer(killer_type _killer);
 
-    std::string cloud_name(const std::string &default_name = "",
-                           bool terse = false) const;
+    string cloud_name(const string &default_name = "", bool terse = false) const;
     void announce_actor_engulfed(const actor *engulfee,
                                  bool beneficial = false) const;
 
@@ -322,9 +321,9 @@ struct shop_struct
     uint8_t             greed;
     shop_type           type;
     uint8_t             level;
-    std::string         shop_name;
-    std::string         shop_type_name;
-    std::string         shop_suffix_name;
+    string              shop_name;
+    string              shop_type_name;
+    string              shop_suffix_name;
 
     FixedVector<uint8_t, 3> keeper_name;
 
@@ -378,11 +377,11 @@ public:
     {
     }
 
-    static level_id parse_level_id(const std::string &s) throw (std::string);
+    static level_id parse_level_id(const string &s) throw (string);
     static level_id from_packed_place(const unsigned short place);
 
     unsigned short packed_place() const;
-    std::string describe(bool long_name = false, bool with_number = true) const;
+    string describe(bool long_name = false, bool with_number = true) const;
 
     void clear()
     {
@@ -523,7 +522,7 @@ struct item_def
     unsigned short orig_place;
     short          orig_monnum;
 
-    std::string inscription;
+    string inscription;
 
     CrawlHashTable props;
 
@@ -535,11 +534,10 @@ public:
     {
     }
 
-    std::string name(description_level_type descrip,
-                     bool terse = false, bool ident = false,
-                     bool with_inscription = true,
-                     bool quantity_in_words = false,
-                     iflags_t ignore_flags = 0x0) const;
+    string name(description_level_type descrip, bool terse = false,
+                bool ident = false, bool with_inscription = true,
+                bool quantity_in_words = false,
+                iflags_t ignore_flags = 0x0) const;
     bool has_spells() const;
     bool cursed() const;
     int book_number() const;
@@ -580,9 +578,8 @@ public:
     bool is_greedy_sacrificeable() const;
 
 private:
-    std::string name_aux(description_level_type desc,
-                         bool terse, bool ident, bool with_inscription,
-                         iflags_t ignore_flags) const;
+    string name_aux(description_level_type desc, bool terse, bool ident,
+                    bool with_inscription, iflags_t ignore_flags) const;
 };
 
 typedef item_def item_info;
@@ -613,7 +610,7 @@ public:
     bool is_explore() const;
     bool is_any_travel() const;
 
-    std::string runmode_name() const;
+    string runmode_name() const;
 
     // Clears run state.
     void clear();
@@ -633,7 +630,7 @@ private:
     bool run_should_stop() const;
 };
 
-typedef std::vector<delay_queue_item> delay_queue_type;
+typedef vector<delay_queue_item> delay_queue_type;
 
 class monster_spells : public FixedVector<spell_type, NUM_MONSTER_SPELL_SLOTS>
 {
@@ -665,23 +662,22 @@ public:
     map_marker *find(map_marker_type type);
     void move(const coord_def &from, const coord_def &to);
     void move_marker(map_marker *marker, const coord_def &to);
-    std::vector<map_marker*> get_all(map_marker_type type = MAT_ANY);
-    std::vector<map_marker*> get_all(const std::string &key,
-                                     const std::string &val = "");
-    std::vector<map_marker*> get_markers_at(const coord_def &c);
-    std::string property_at(const coord_def &c, map_marker_type type,
-                            const std::string &key);
-    std::string property_at(const coord_def &c, map_marker_type type,
-                            const char *key)
-    { return property_at(c, type, std::string(key)); }
+    vector<map_marker*> get_all(map_marker_type type = MAT_ANY);
+    vector<map_marker*> get_all(const string &key, const string &val = "");
+    vector<map_marker*> get_markers_at(const coord_def &c);
+    string property_at(const coord_def &c, map_marker_type type,
+                       const string &key);
+    string property_at(const coord_def &c, map_marker_type type,
+                       const char *key)
+    { return property_at(c, type, string(key)); }
     void clear();
 
     void write(writer &) const;
     void read(reader &);
 
 private:
-    typedef std::multimap<coord_def, map_marker *> dgn_marker_map;
-    typedef std::pair<coord_def, map_marker *> dgn_pos_marker;
+    typedef multimap<coord_def, map_marker *> dgn_marker_map;
+    typedef pair<coord_def, map_marker *> dgn_pos_marker;
 
     void init_from(const map_markers &);
     void unlink_marker(const map_marker *);
@@ -697,14 +693,14 @@ struct message_filter
     int             channel;        // Use -1 to match any channel.
     text_pattern    pattern;        // Empty pattern matches any message
 
-    message_filter(int ch, const std::string &s)
+    message_filter(int ch, const string &s)
         : channel(ch), pattern(s)
     {
     }
 
-    message_filter(const std::string &s) : channel(-1), pattern(s, true) { }
+    message_filter(const string &s) : channel(-1), pattern(s, true) { }
 
-    bool is_filtered(int ch, const std::string &s) const
+    bool is_filtered(int ch, const string &s) const
     {
         bool channel_match = ch == channel || channel == -1;
         if (!channel_match || pattern.empty())
@@ -717,12 +713,12 @@ struct message_filter
 struct sound_mapping
 {
     text_pattern pattern;
-    std::string  soundfile;
+    string       soundfile;
 };
 
 struct colour_mapping
 {
-    std::string tag;
+    string tag;
     text_pattern pattern;
     int colour;
 };
@@ -749,7 +745,7 @@ struct item_comparator
         return (negated? -cmpfn(a, b) : cmpfn(a, b));
     }
 };
-typedef std::vector<item_comparator> item_sort_comparators;
+typedef vector<item_comparator> item_sort_comparators;
 
 struct menu_sort_condition
 {
@@ -760,14 +756,14 @@ public:
 
 public:
     menu_sort_condition(menu_type mt = MT_INVLIST, int sort = 0);
-    menu_sort_condition(const std::string &s);
+    menu_sort_condition(const string &s);
 
     bool matches(menu_type mt) const;
 
 private:
-    void set_menu_type(std::string &s);
-    void set_sort(std::string &s);
-    void set_comparators(std::string &s);
+    void set_menu_type(string &s);
+    void set_sort(string &s);
+    void set_comparators(string &s);
 };
 
 struct mon_display