Split error messages into separate files.

Update libbb.h, per suggestion from Vladimir, to include __attribute__((format
(printf ...))) stuff
 -Erik
diff --git a/libbb/vperror_msg.c b/libbb/vperror_msg.c
new file mode 100644
index 0000000..ca9361e
--- /dev/null
+++ b/libbb/vperror_msg.c
@@ -0,0 +1,51 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Copyright (C) tons of folks.  Tracking down who wrote what
+ * isn't something I'm going to worry about...  If you wrote something
+ * here, please feel free to acknowledge your work.
+ *
+ * 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.
+ *
+ */
+
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+#include "libbb.h"
+
+extern void vperror_msg(const char *s, va_list p)
+{
+	int err=errno;
+	if(s == 0) s = "";
+	verror_msg(s, p);
+	if (*s) s = ": ";
+	fprintf(stderr, "%s%s\n", s, strerror(err));
+}
+
+
+/* END CODE */
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/