contrib: install PyOxidizer in Linux and Windows environments
For Linux, this was trivial.
For Windows, we need to teach the powershell script to install
Rust as well. This was also pretty straightforward.
Differential Revision: https://phab.mercurial-scm.org/D8468
#require symlink
https://bz.mercurial-scm.org/1438
$ hg init
$ ln -s foo link
$ hg add link
$ hg ci -mbad link
$ hg rm link
$ hg ci -mok
$ hg diff -g -r 0:1 > bad.patch
$ hg up 0
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg import --no-commit bad.patch
applying bad.patch
$ hg status
R link
? bad.patch