polib: update to latest release 1.0.7 (upstream rev
d75ce6dbbc2a)
# no-check-commit third-party code that doesn't match our style
Differential Revision: https://phab.mercurial-scm.org/D5001
Greg Ward, author of the original bfiles extension
Na'Tosha Bard of Unity Technologies
Fog Creek Software
Special thanks to the University of Toronto and the UCOSP program