Fix: Dev: `/E` option required with MORE for working on higher version of Windows 10 (**_Build 17134_**)
Fix: Dev: `/E` option required with MORE for working on higher version of Windows 10 (**_Build 17134_**)

Changes:
- Added small text line to debug files being written iff environment variable `%DEBUG%` is `true`
- Added option `/E` to both MORE commands used inside install.cmd for copying files.

GuillaumeSeren/git-extras,hickey/git-extras,spacewander/git-extras,tj/git-extras