split libbb: moved xregcomp separatelly for speed up recompile

include/libbb.h

@@ -29,7 +29,6 @@
 #include <stdarg.h>
 #include <sys/stat.h>
 #include <sys/types.h>
-#include <regex.h>
 #include <termios.h>
 #include <stdint.h>
 
@@ -476,7 +475,6 @@ extern void vfork_daemon_rexec(int nochdir, int noclose,
 		int argc, char **argv, char *foreground_opt);
 extern int get_terminal_width_height(int fd, int *width, int *height);
 extern unsigned long get_ug_id(const char *s, long (*my_getxxnam)(const char *));
-extern void xregcomp(regex_t *preg, const char *regex, int cflags);
 
 #define HASH_SHA1	1
 #define HASH_MD5	2

include/xregex.h

@@ -0,0 +1,31 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Busybox xregcomp utility routine
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Based in part on code from sash, Copyright (c) 1999 by David I. Bell
+ * Permission has been granted to redistribute this code under the GPL.
+ *
+ */
+#ifndef __BB_REGEX__
+#define __BB_REGEX__
+
+#include <sys/types.h>
+#include <regex.h>
+extern void xregcomp(regex_t *preg, const char *regex, int cflags);
+
+#endif