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, 4 insertions, 4 deletions

diff --git a/crawl-ref/source/hints.h b/crawl-ref/source/hints.h
index 2bdfb48b8f..44db8bcce4 100644
--- a/crawl-ref/source/hints.h
+++ b/crawl-ref/source/hints.h
@@ -164,14 +164,14 @@ void hints_first_item(const item_def& item);
 void learned_something_new(hints_event_type seen_what,
                            coord_def gc = coord_def());
 formatted_string hints_abilities_info(void);
-std::string hints_skills_info(void);
-std::string hints_skill_training_info();
-std::string hints_skills_description_info(void);
+string hints_skills_info(void);
+string hints_skill_training_info();
+string hints_skills_description_info(void);
 
 // Additional information for tutorial players.
 void check_item_hint(const item_def &item, unsigned int num_old_talents);
 void hints_describe_item(const item_def &item);
-void hints_inscription_info(bool autoinscribe, std::string prompt);
+void hints_inscription_info(bool autoinscribe, string prompt);
 bool hints_pos_interesting(int x, int y);
 void hints_describe_pos(int x, int y);
 bool hints_monster_interesting(const monster* mons);