Patch by Robert Scheck <robert@fedoraproject.org> for libical >= 0.46, which removes the unused
AC_PROG_MKDIR_P macro, because Red Hat Enterprise Linux 4 and 5 (including derivates/downstreams)
have autoconf < 2.60, which don't support AC_PROG_MKDIR_P. Unfortunately, libical upstream ships
in libical 0.46 broken configure and Makefile files, thus autoreconf needs to be run downstream.
The somehow funny thing is, AC_PROG_MKDIR_P doesn't seem to be used anywhere in the source?!

Upstream link: https://sourceforge.net/tracker/?func=detail&aid=3140412&group_id=16077&atid=316077

--- libical-0.46/configure.in					2010-08-30 22:06:25.000000000 +0200
+++ libical-0.46/configure.in.mkdir_p				2010-12-19 22:48:00.000000000 +0100
@@ -17,7 +17,6 @@
 AM_PROG_LEX
 AC_PROG_LN_S
 AC_PROG_INSTALL
-AC_PROG_MKDIR_P
 
 dnl Initialize libtool
 AM_PROG_LIBTOOL