fixes #8263

Set LANG for terminal process and introduce setting to enable it.

This reverts commit 23afe969.

* Removed all previous commit message code.
* Changed `getCommitInfo` call to return a string that is the template contents.
  * Removed from `IModel`, `IRawStatus`
* Still has issue of locating `~/some/path/with/tilde` in it.
  * path.resolve resolves to the repo's `.build` path and not the user folder.
  * I'm testing this on Windows, and I don't know the behavior on Linux.

Revert "oops"

This reverts commit 2be0f1d8.

Revert "cleanup top level gulpfile"

This reverts commit 84931171.

Revert "use strict"

This reverts commit b6b7e820.

Revert "forgot top level"

This reverts commit 15528287.

Revert "remove VSCODE_BUILD_QUIET"

This reverts commit 8df5e70d.

fixes #7258

fixes #7453

fixes #7053

Fixes #6451

For the integrated terminal

Fixes #8946

Fixes #9095

Fixes #9089