[XCConfigHelper] Adds $(inherited) to generated OTHER_SWIFT_FLAGS

[Resolver] Shows an informative error message when there is no base specification found for a `:head` dependency.

Closes https://github.com/CocoaPods/CocoaPods/issues/3230.

[Validator] Lint dynamic libs for iOS > 7

Fix static binaries check

Allows the usage of `:head` dependencies even when the most recent published version was a pre-release.

Closes https://github.com/CocoaPods/CocoaPods/issues/3212.

Set FRAMEWORK_SEARCH_PATHS only when needed

We don't need to add $PODS_FRAMEWORK_BUILD_PATH, if there is no pod target, which should be build.
Fixes #3213.

Closes https://github.com/CocoaPods/CocoaPods/issues/2990.

See 122c8d98

Logical expressions are hard.

Set SKIP_INSTALL=YES for all generated targets

Fixes #3007.

Add `--use-libraries` option for `pod repo push`

[Project] Legacy Build Location Support

fix for xcode 'legacy' build locations, so that products from Pods.xcodeproj get resolved correctly from user's xcodeproj targets, updating changelog

Support for spaces in full path to executables.

Lint as framework automatically