sys-cluster/charm-6.6.0_rc1: Version bump.

Package-Manager: portage-2.2.7
sys-cluster/charm-6.6.0_rc1: Rewrote patch to enable shared mode.

The patch is targeted now for v6.7.0 by upstream.

Package-Manager: portage-2.2.7
Add 1 more chunk for multifit/Makefile.am