[docs] use git diff instead of git format-patch
authorAlexander Lanin <alex@lanin.de>
Thu, 2 Apr 2020 14:18:34 +0000 (07:18 -0700)
committerPaul Robinson <paul.robinson@sony.com>
Thu, 2 Apr 2020 14:20:27 +0000 (07:20 -0700)
commit6668453dd25749ac47cd9a822d036b694b0a619d
tree72a9da99c1cdc2ddf64388fc818e4acc7f978c21
parent183fba635d5ece8466af3085c2e831f9a93ee775
[docs] use git diff instead of git format-patch

Uploading output from `git format-patch` fails when version has
more than 2 dots, e.g. git version 2.24.1.windows.2 which is
currently recommended by e.g. GitExtensions or 2.24.1.rc on Linux.

Differential Revision: https://reviews.llvm.org/D72374
llvm/docs/DeveloperPolicy.rst
llvm/docs/GettingStarted.rst
llvm/docs/Phabricator.rst