Bump sys-kernel/geek-sources-3.7.5 -> sys-kernel/geek-sources-3.7.6
Bump aufs in sys-kernel/geek-sources-3.7.6
Bump genpatches in sys-kernel/geek-sources-3.7.6
Bump ice in sys-kernel/geek-sources-3.7.6
Bump zfs in sys-kernel/geek-sources-3.7.6
Bump sys-kernel/geek-sources-3.8-r5 -> sys-kernel/geek-sources-3.8-r6
Delete sys-kernel/geek-sources-3.7.5