Fix test crashes in KWRealObjectStubTest

It *appears* as if it's no longer necessary to call `[super dealloc]` in
`KWInterceptedDealloc()`. After removing this call, the tests seem to
run just fine with no crashes.
Resolve "type mismatch" test failure on 64-bit with NSUInteger
Remove "-d" flag to atos which fails on OS X 10.10
Use project-level defaults for archs config

i.e., ONLY_ACTIVE_ARCH=NO and VALID_ARCHS="armv7 armv7s arm64"
Convert Kiwi + KiwiTests to XCTest
Delete SenTestingKit+KiwiAdditions
Delete redundant XCTest targets/schemes
Reorganise top-level project groups
Add Kiwi-OSX test bundle
Get OSX tests compiling
Add OS X tests to Makefile
Remove references to SenTestingKit
Use property notation for kw_example/kw_setExample:
Resolve project-level warnings
Fix auto-property-synthesis warnings
Enable ARC on KWStub.m in Kiwi-OSX
Issue busting: delete deprecated KWRaiseMatcher
Update podspec for XCTest-only
Convert KWMessagePattern to ARC
Move KWMessagePattern into Core