getdeps: enable the INSTALL_PYTHON_LIB option for Eden builds on Windows
getdeps: enable the INSTALL_PYTHON_LIB option for Eden builds on Windows

Summary: Enable `INSTALL_PYTHON_LIB=ON` for internal builds of Eden on Windows.

Reviewed By: pkaush

Differential Revision: D19060630

fbshipit-source-id: 40d4f8784958fbeaad4f0d332c55fa0cb810cb5e

facebookincubator/mvfst,facebookincubator/mvfst,facebookincubator/mvfst,facebookincubator/mvfst,facebookincubator/mvfst