The ability to build non-git repositories was broken by two changes:
- The existence of an empty 'patches' directory created during the
unpack phase. This dir was incorrectly identified as a valid meta
directory and broke the build. By ensuring that it is removed before
creating the empty repository, it will no longer be found instead of
the real meta directory.
- The attempt to reset the git repository to a specific SRCREV when
no SRCREV was provided. By checking for a SRCREV of 'INVALID', we
avoid any processing and failed git operations.
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
