rework nonCssHints API of StyleEngine * Instead of passing the nonCssHints as a CssPropertyList, set the hints separately and create the list in StyleEngine. * The CssPropertyList holding the nonCssHints is now completely managed by StyleEngine and kept on the stack. * Replace the table_cell_props mechanic in html.cc/table.cc with a new method inheritNonCssHints() in StyleEngine.

noinst_LIBRARIES = libDlib.a

libDlib_a_SOURCES = \
	dlib.h \
	dlib.c