setup-rh: add glibc-devel{,.i686}, libgcc.i686, s/python26/python/

Signed-off-by: Christopher Larson <kergoth@gmail.com>
mel.conf: update SANITY_TESTED_DISTROS

Currently, we do not support CentOS 6 due to its lack of the needed python
2.7. We also do not support Debian, SUSE, or openSUSE at this time.

JIRA: SB-1262

Signed-off-by: Christopher Larson <kergoth@gmail.com>
Merge pull request #50 from kergoth/update_sanity_tested_distros

mel.conf: update SANITY_TESTED_DISTROS
mel.conf: adapt to meta-ro-rootfs switch to volatile-binds

Signed-off-by: Christopher Larson <kergoth@gmail.com>
Merge pull request #51 from kergoth/update-for-volatile-binds

mel.conf: adapt to meta-ro-rootfs switch to volatile-binds
mel.conf: only inherit read_only_rootfs_systemd when ro-rootfs is included

Signed-off-by: Christopher Larson <kergoth@gmail.com>
Merge remote-tracking branch 'mel/release/2013.11'

* mel/release/2013.11:
  mel.conf: only inherit read_only_rootfs_systemd when ro-rootfs is included
  mel.conf: adapt to meta-ro-rootfs switch to volatile-binds
  mel.conf: update SANITY_TESTED_DISTROS
  setup-rh: add glibc-devel{,.i686}, libgcc.i686, s/python26/python/
update-rc.d: process symlinks recursively

When processing startup scripts which use update-alternatives, we need to keep
resolving the symlink recursively until we hit a real file, due to the
alternatives indirection. This fixes the ability to run certain postinsts at
do_rootfs time, which is needed for good read-only-rootfs support.

Signed-off-by: Christopher Larson <kergoth@gmail.com>