Allow wildcards in skip lists

Hi,

On my wish list for GNU Global I have being able to add wildcards in
skips lists.

Emacs' flymake-mode creates temporary copies of files by adding
`_flymake' before the the file extension. I.e. a temporary copy of
`my-code.php' is named `my-code_flymake.php'. So adding `*_flymake.*` to
the skip list will ensured that the file is not indexed by gtags.

I have created a very simple patch that turns `*' in the skip list into
`.*' in the regular expression instead of escaping it.

Kind regards,
Arne Jørgensen

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Index: libutil/find.c
===================================================================
RCS file: /sources/global/global/libutil/find.c,v
retrieving revision 1.91
diff -u -r1.91 find.c
--- libutil/find.c	13 Oct 2012 07:01:33 -0000	1.91
+++ libutil/find.c	13 Feb 2014 08:10:21 -0000
@@ -275,7 +275,9 @@
 		} else {
 			strbuf_putc(reg, '/');
 			for (q = skipf; *q; q++) {
-				if (isregexchar(*q))
+				if (*q == '*')
+					strbuf_putc(req, '.');
+				else if (isregexchar(*q))
 					strbuf_putc(reg, '\\');
 				strbuf_putc(reg, *q);
 			}