This reverts commit 554e1951.

Conflicts:
	CHANGELOG.md

Fixes #2651

Fixes #2083

Before, we was stubbing something which wasn't called and thus searching
the whole master repository. This change shaves 20 seconds off the
testing time.

Fixes #2684

Fixes an issue when using pods in static library targets

Fixes #2666.

fixes crash when using file URLs.

Added a mising backtick in xcconfig_integrator warning message

Closes https://github.com/CocoaPods/CocoaPods/issues/2678.

Indentation! Indentation! Indentation! Indentation! Indentation!

While a user project is open and we delete/change the xcconfig files which
the user project references. It causes any subsequent builds to fail
until the project is closed/re-opened, or the project file is touched.

This commit touches the file if we do not need to save it, thus causing
Xcode to reload it.

Closes #2627
Closes #2665

Closes https://github.com/CocoaPods/CocoaPods/issues/2494.

Fixes #2631.

[Command] Remove deprecated pod push

Closes https://github.com/CocoaPods/CocoaPods/issues/2624.

Remove duplicated "because" word in warning message.

Fix for 52c2f915.

Update to new CLIntegracon Patch

[CHANGELOG] Add changlog entry for sanitization of special characters in build configs in target environment header

CHANGELOG entry for https://github.com/CocoaPods/CocoaPods/pull/2532.

Spec for changes introduced in https://github.com/CocoaPods/CocoaPods/pull/2532