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/dgl-message.cc b/crawl-ref/source/dgl-message.cc
index 95f0061120..255d99505c 100644
--- a/crawl-ref/source/dgl-message.cc
+++ b/crawl-ref/source/dgl-message.cc
@@ -19,14 +19,14 @@
 
 static struct stat mfilestat;
 
-static void _show_message_line(std::string line)
+static void _show_message_line(string line)
 {
-    const std::string::size_type sender_pos = line.find(":");
-    if (sender_pos == std::string::npos)
+    const string::size_type sender_pos = line.find(":");
+    if (sender_pos == string::npos)
         mpr(line.c_str());
     else
     {
-        std::string sender = line.substr(0, sender_pos);
+        string sender = line.substr(0, sender_pos);
         line = line.substr(sender_pos + 1);
         trim_string(line);
         formatted_string fs;