Add a sed to prevent useless warnings in libxml2
Add a patch to fix problems with Valgrind's test suite
Remove obsolete note about cURL test suite.
git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@17601 af4574ff-66df-0310-9fd7-8a98e5e911e0
Make referenced to Qt4 in highlight and cairo external.
git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@17460 af4574ff-66df-0310-9fd7-8a98e5e911e0