Replace test.bash with go test that builds and run the bind tests
through the XCode testing framework.
Running on the iOS emulator unmasked a bug where autorelease pools
were not in place for Go calls into ObjC, leaking autoreleased
objects. Fix that by adding autoreleasepool blocks to the tracker
finalizer callback and to every generated ObjC proxy.
Will not run on the emulator without CL 19206.
Change-Id: I6a775f9995f3b8ea50272982069d033e41ddcb7b
Reviewed-on: https://go-review.googlesource.com/20255
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
4da9347475