make l10n buildable separately

- this renames the 'almost' module target to non-l10n
- and adds a l10n target which is intended to only build l10n parts of
  the product
- packagers should then be able to build l10n and non-l10n parts of the
  product independently, thus:
   - enable quicker rebuilds
   - distribution of load
   - updates to l10n without a full rebuild
   - security fixes to binaries without rebuilding all l10n
- the new targets are called build-l10n-only and build-non-l10n-only
- note this is not intended to move a concept of split packages
  upstream -- while this exsists in distros, the number of test
  scenarios for this would explode upstream

Change-Id: Ib8ccc9bc52718d9b0ebbfee76ad93dc29c260863

Conflicts:
	filter/Module_filter.mk