More EH tweaks.  New ABI now uses "@id" for id catches and NULL for catchalls.  Code compiled with GCC and clang with the old ABI will continue to use NULL for catchalls and id catches, which means that C++ exceptions will be caught in their boxed form here and must be explicitly rethrown.  
More EH tweaks.  New ABI now uses "@id" for id catches and NULL for catchalls.  Code compiled with GCC and clang with the old ABI will continue to use NULL for catchalls and id catches, which means that C++ exceptions will be caught in their boxed form here and must be explicitly rethrown.  



git-svn-id: a68838e7bd575144b7122a20f5a950e65beaf589@32616 72102866-910b-0410-8b05-ffd578937521

itumashyk/ndk-objc-gs-libobjc2,itumashyk/ndk-objc-gs-libobjc2