add new widget (inspired by GtkFixed annd GtkPaned).
remove child properties temporarily.
remove width & height properties from FloatBorderChild.
draw border.
add draw.
add Makefile
add top & left handles.
implement float_border_reorder() Method.
implement FB's frozen property.
purge some output & comments
fix Method float_border_reorder().
update test-floatBorder.c