Define CLUTCH_DEBUG conditionally (NDEBUG or set by user with xcodebuild)
Remove hard-coded library search path
CLUTCH_DEBUG=1 when in -configuration Debug, CLUTCH_DEBUG can still be set with -configuration Release (xcodebuild)
Merge project file to fix code signing (strip and re-codesign is done later anyway)
Merge pull request #27 from Tatsh/adjust-clutch-debug

Adjust CLUTCH_DEBUG - Thanks Tatsh!