remove git repository from .hgsub
1- inline-replaced-wm-rl-003.xht was filename-renamed
inline-replaced-wm-lr-003.xht
2- Dark color used in some 50+ tests was changed from
black to blue
3- block-flow-direction-001-ref.xht was created
4- black1x1.png and black20x20.png
were removed from css-writing-modes-3/support/
5- blue1x1.png was created and added into
css-writing-modes-3/support/