libiberty: documentation markup and order fixes.

libiberty/:
	* splay-tree.c: Escape wrapping newlines in texinfo markup
	with '@', to fix function declaration output rendering.
	* gather-docs: Relax and improve macro name matching to actually
	match all current names and to allow input line wrapping.
	* bsearch.c, concat.c, crc32.c, fnmatch.txh, fopen_unlocked.c,
	hashtab.c, insque.c, make-relative-prefix.c, memchr.c, memcmp.c,
	memcpy.c, memmem.c, memmove.c, mempcpy.c, memset.c,
	pexecute.txh, random.c, setenv.c, setproctitle.c,
	simple-object.txh, snprintf.c, stpncpy.c, strncmp.c, strtod.c,
	strtol.c, vasprintf.c, vprintf.c, vsnprintf.c, xmemdup.c:
	Wrap long texinfo input lines.
	* functions.texi: Regenerate.

libiberty/strtod.c

@@ -1,5 +1,5 @@
 /* Implementation of strtod for systems with atof.
-   Copyright (C) 1991, 1995, 2002 Free Software Foundation, Inc.
+   Copyright (C) 1991, 1995, 2002, 2011 Free Software Foundation, Inc.
 
 This file is part of the libiberty library.  This library is free
 software; you can redistribute it and/or modify it under the
@@ -24,7 +24,8 @@ the executable file might be covered by the GNU General Public License. */
 
 /*
 
-@deftypefn Supplemental double strtod (const char *@var{string}, char **@var{endptr})
+@deftypefn Supplemental double strtod (const char *@var{string}, @
+  char **@var{endptr})
 
 This ISO C function converts the initial portion of @var{string} to a
 @code{double}.  If @var{endptr} is not @code{NULL}, a pointer to the