[Ohrrpgce] SVN: teeemcee/11931 8-bit Surfaces now can have masks too; implement 8->32 bit blits with ma

[subversion at HamsterRepublic.com]

teeemcee
2020-07-22 17:44:58 -0700 (Wed, 22 Jul 2020)
344
8-bit Surfaces now can have masks too; implement 8->32 bit blits with masks

This fixes many sprite dissolves not working in 32-bit mode

Normally it would be necessary to recompile gfx_directx.dll after changing
Surface, but I appended the new field to the end and gfx_directx doesn't use
Surfaces for anything except one function which is OK.
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U   wip/allmodex.bas
U   wip/blit.c
U   wip/surface.bi
U   wip/surface.cpp
U   wip/surface.h