Top level directory reorg

Move src/po -> po
Combine common and compat -> lib/util
Move zlib -> lib/zlib

lib/util/isblank.c

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2008, 2010-2011, 2013
+ *	Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>
+
+#ifndef HAVE_ISBLANK
+
+#include <sys/types.h>
+
+#include "missing.h"
+
+#undef isblank
+int
+isblank(int ch)
+{
+    return ch == ' ' || ch == '\t';
+}
+#endif /* HAVE_ISBLANK */