Apparently at some point either freetype got fixed, or other gdi32
changes made the matrix members usage match freetype. This patch makes
my test application match the Windows behaviour in font rotation direction.

This patch basically duplicates the logic for caching fonts from gdi32,
and fixes the problem with a test application which rotates a text string.

msi: The PATH environment variable can be longer than MAX_PATH, so dynamically allocate strings to deal with that.

Found by Smatch.