Compress NVCC flags for Windows (#45842)
Summary:
Fixes #{issue number}
This makes the command line shorter.
Also updates `randomtemp` in which the previous version has a limitation that the length of the argument cannot exceed 260.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/45842
Reviewed By: albanD
Differential Revision: D24137088
Pulled By: ezyang
fbshipit-source-id: f0b4240735306e302eb3887f54a2b7af83c9f5dc
