qt5: Fix configure params. Use mingw builded mysql library. Build examples.
Qt5: Fix mysql library name.
Merge pull request #37 from sxprophet/master

intel-tbb: added debug build
python2: make a python-config-u.sh

.. which returns Unixy/MSYS2 paths rather than Windows-y ones.
This is so that GDB detects and defines PYTHON_PATH_RELOCATABLE.
gdb: configure as --with-python=../python-config-u.sh

So that PYTHON_PATH_RELOCATABLE is detected and defined.
gcc: fix a bug in my non-existent semantics patch

.. which could lead to infinite loops when compiling. Oops.
new recipe: szip-2.1