* Main gyp files are now standardized as platform/<platform>/platform.gyp.
* Each platform gyp file defines appropriate loop_lib and headless_lib variables.
* Each platform gyp file includes mbgl.gypi, which defines base targets which may be useful to all platforms.
* CI targets are consistent across platforms: `make $(PLATFORM) && make test-$(PLATFORM)`.
* Renamed the "linux" test app to "glfw". It's now built in OS X CI.
* Android build flakiness is fixed.
* iOS CI builds the bench and iosapp targets.
* Mesa version is now in one place.
* CI scripts use bash "strict mode" and correct error handling.
* All build output goes to the build directory.
* Removed vestigial iOS/OS X/Android Travis scripts.
Renamed SDK classes related to offline viewing to more closely match the terminology used by mbgl and the Android SDK while remaining consistent with Cocoa naming principles.
Added a new ifabric Make target for packaging up a static framework similar to the one released as 3.0.1. Place artwork and certificate assets inside Mapbox.bundle inside Mapbox.framework. Link SystemConfiguration in the umbrella header.
Distinguish between the framework bundle and the resources bundle. For the dynamic frameworks and embedded static frameworks, the two are the same; for the non-embedded static framework, the latter resides inside the former.
This file was originally added on the release-ios-v3.1.0 branch, before #3913 merged ios/ into platform/ios/. When the release branch was merged back into master in 17f44d7bd9, the file was left in the old ios/ directory.
