Add Autotools Items to Complete the Cogl-Path MSVC Projects

This adds a centralized autotools Makefile to be used in the completion
of the project files for Cogl-Path for now, which can be used also in
Cogl, Cogl-Pango and possibly Cogl-Gst so that we could have less clutter
in the autotools files.

This patch set will also allow the Cogl-Path project files to be filled in
during 'make dist' and make them distributed during a tarball release.

Reviewed-by: Neil Roberts <neil@linux.intel.com>
Update .gitignore

(cherry picked from commit d749a28cb0293a6676b7c7e2dce34562ffdc1425)

Conflicts:
	.gitignore

Reviewed-by: Neil Roberts <neil@linux.intel.com>