Convert utility.c into libbb.a. It is now a whole pile of .c

files.  Clean up the resulting damage and fix up the makefile.
 -Erik

libbb/xfuncs.c

@@ -0,0 +1,107 @@
+/* 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 <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include "libbb.h"
+
+/* same conditions as recursive_action */
+#define bb_need_memory_exhausted
+#define BB_DECLARE_EXTERN
+#include "../messages.c"
+
+
+#ifndef DMALLOC
+extern void *xmalloc(size_t size)
+{
+	void *ptr = malloc(size);
+
+	if (!ptr)
+		error_msg_and_die(memory_exhausted);
+	return ptr;
+}
+
+extern void *xrealloc(void *old, size_t size)
+{
+	void *ptr = realloc(old, size);
+	if (!ptr)
+		error_msg_and_die(memory_exhausted);
+	return ptr;
+}
+
+extern void *xcalloc(size_t nmemb, size_t size)
+{
+	void *ptr = calloc(nmemb, size);
+	if (!ptr)
+		error_msg_and_die(memory_exhausted);
+	return ptr;
+}
+
+extern char * xstrdup (const char *s) {
+	char *t;
+
+	if (s == NULL)
+		return NULL;
+
+	t = strdup (s);
+
+	if (t == NULL)
+		error_msg_and_die(memory_exhausted);
+
+	return t;
+}
+#endif
+
+extern char * xstrndup (const char *s, int n) {
+	char *t;
+
+	if (s == NULL)
+		error_msg_and_die("xstrndup bug");
+
+	t = xmalloc(++n);
+	
+	return safe_strncpy(t,s,n);
+}
+
+FILE *xfopen(const char *path, const char *mode)
+{
+	FILE *fp;
+	if ((fp = fopen(path, mode)) == NULL)
+		perror_msg_and_die("%s", path);
+	return fp;
+}
+
+/* END CODE */
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/