https://bugs.gentoo.org/show_bug.cgi?id=438758

Make sure the mutex directory exists before actually starting Apache.

diff -Nurd gentoo-apache-2.4.3.orig/init/apache2.initd gentoo-apache-2.4.3/init/apache2.initd
--- gentoo-apache-2.4.3.orig/init/apache2.initd	2012-10-21 13:31:52.277018460 +0700
+++ gentoo-apache-2.4.3/init/apache2.initd	2012-10-21 13:47:12.782510552 +0700
@@ -73,6 +73,10 @@
 start() {
 	checkconfig || return 1
 
+	# Apache will not start if the mutex directory is not available, see bug
+	# #438758
+	[ ! -e /var/run/apache_ssl_mutex ] && mkdir /var/run/apache_ssl_mutex
+
 	ebegin "Starting ${SVCNAME}"
 	# Use start stop daemon to apply system limits #347301 
 	start-stop-daemon --start -- ${APACHE2} ${APACHE2_OPTS} -k start