kernel-snapshot: update to 3.8-rc7.
Merge branch 'master' of github.com:xtraeme/xbps-packages

* 'master' of github.com:xtraeme/xbps-packages:
  xbps-src: revbump++.
  xbps-src: bump version.
  nvidia304: fix module building on kernels up to .20.
  powertop: merge some patches for bugfixes from Fedora.
  postfix: update to 2.10.0.
  nginx: update to 1.2.7.
  gnome-shell: update to 3.6.3.
  mutter: remove dup build deps and obsolete configure args.
  mutter: update to 3.6.3.
common/shlibs: add LuaJIT soname.