python: Add missing RDEPENDS for python-unittest

After installing python-unittest, the following errors occur when executing
"import unittest" from a python commandline:
ImportError: No module named StringIO
ImportError: No module named pprint
ImportError: No module named difflib
ImportError: No module named pprint
ImportError: No module named fnmatch

Fix this by adding the missing dependencies to the generator script and run
the generator.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
python-imaging: fix compilation with Freetype 2.5.1

Take a patch from the Pillow "friendly fork" to fix compilation with Freetype
2.5.1.

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
linux-yocto/*: restore branch designations

The fetcher now confirms that a given SRCREV exists on the branch specified
in the SRC_URI. The linux-yocto recipes used to do this themselves, but that
functionality was removed to allow builds when only the SRCREV was set and
to be similar to other recipes.

Now that the fetcher checks this value, and other recipes must also have
SRCREV + branch information, this extra information can be put back into
the recipes.

Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>