Make the comment about Differential Revision more accurate.

Sponsored by:	Absolight
Document new squid vulnerability.

PR:		193737
Submitted by:	timp87 at gmail.com
MFH:		2014Q3
Switch to USES=libtool:build
Update squid to 3.4.8 and add patches to squid33.

This update addresses CVE-2014-6270.

PR:		193737
Submitted by:	timp87 at gmail.com
Remove old libtool patch
Remove old libtool patch
Remove old libtool patch
Remove old libtool patch and add INSTALL_TARGET=install-strip
Update to 5.5.17 release.
Update to 5.4.33 release.
Update to the 20140914 snapshot of GCC 5.0.

On the packaging side this adds another Python script coming from
the libstdc++ side of things.