version up : firefox 33.1.
version up : gnutls 3.2.20.
version up : LibreOffice 4.3.4.1.
version up eggs.
version up : percona-toolkit 2.2.12.
fixup! request: drop redundant 'config' & 'sla' options

Sorry everyone for this mistake.
Merge branch 'master' into erp5-cluster

Conflicts:
	stack/erp5/buildout.cfg