Add support for PHP's 'extended information for debugger/profiler' mode
Handle ZEND_EXT_FCALL_END, skipping if necessary
Verified with running tests with new "-e" run-tests arg:
$ make test TESTS=Zend/tests/*-on-non-objects-*phpt TEST_PHP_ARGS=-e
# Tests passed    :   11 (100.0%)

$ make test TESTS=Zend/tests/*-on-non-objects-*phpt
# Tests passed    :   11 (100.0%)

Before, this would cause a SEGV. Thanks @nikic for raising this concern