Don't make bug workaround compile args dependend on presence of MANIFEST.in.
Don't make bug workaround compile args dependend on presence of
MANIFEST.in.

Added workarounds for Cython issue 811 and 813.

darkfeline/python-llfuse,darkfeline/python-llfuse,Serebriakov/python-llfuse,Serebriakov/python-llfuse,darkfeline/python-llfuse,Serebriakov/python-llfuse