Change the codesign which code
Change the codesign which code

Make bash be more printy
Support xcrun not being present and falling back to which properly
Use longform args

EdZava/Squirrel.Mac,emiscience/Squirrel.Mac,Squirrel/Squirrel.Mac,EdZava/Squirrel.Mac,emiscience/Squirrel.Mac,Squirrel/Squirrel.Mac,emiscience/Squirrel.Mac,EdZava/Squirrel.Mac,Squirrel/Squirrel.Mac