added more helper macros to the function declarations, to assist the Python wrapper generator. Fixed memleak in Mat::operator()(Range,Range) and the related functions (Mat::row, Mat::col etc.)

opencv/modules/ml/src/gbt.cpp
 

added "-ggdb3" to GCC flags in Debug configuratin. Hopefully, it will solve problems with tracing code with debuggers

fixed bug with Mat::dataend initialization. Now morph-ex test passes; Also fixed CV_Assert() implementation

the blacklist is sorted in alphabetical order; several tests that should now pass have been commented off