[RFA] add note on command naming to gdbint.texi

[Doug Evans]

Hi.

I'd like to add this to the Coding section of gdbint.texi.

Ok?

2010-06-03  Doug Evans  <dje@google.com>

	* gdbint.texinfo (Coding): Add subsection on command names.

Index: doc/gdbint.texinfo
===================================================================
RCS file: /cvs/src/src/gdb/doc/gdbint.texinfo,v
retrieving revision 1.323
diff -u -p -r1.323 gdbint.texinfo
--- doc/gdbint.texinfo	2 May 2010 23:52:14 -0000	1.323
+++ doc/gdbint.texinfo	3 Jun 2010 18:05:31 -0000
@@ -6245,6 +6245,10 @@ the code detected a user error, recovere
 @code{warning} or the code failed to correctly recover from the user
 error and issued an @code{internal_error}.}
 
+@subsection Command Names
+
+GDB U/I commands are written @samp{foo-bar}, not @samp{foo_bar}.
+
 @subsection File Names
 
 Any file used when building the core of @value{GDBN} must be in lower