D7864: rust-utils: add Rust implementation of Python's "os.path.splitdrive"

[yuja (Yuya Nishihara)]

yuja added a comment.


  So `HgPath` type is no longer intended for "a repository-relative path"?

REPOSITORY
  rHG Mercurial

CHANGES SINCE LAST ACTION
  https://phab.mercurial-scm.org/D7864/new/

REVISION DETAIL
  https://phab.mercurial-scm.org/D7864

To: Alphare, #hg-reviewers, kevincox, pulkit
Cc: yuja, durin42, kevincox, mercurial-devel