cache the value.
don't call Qopen directly in the engine. instead call QFS_Open (generic) or
QFS_WOpen (write only, zip flag).
rework QFS_NextFilename to use a dstring (avoiding a potential buffer
overflow), support 10000 files and work from the top-level fs_userpath
directory. adjust QFS_WriteFile and QFS_WriteBuffers etc to suit.
make sw32 screenshots actually get written.
hopefully everything gets written to the right places :)
about the path it's handed (need to get even more paranoid, though). the
string module just has char replacement so far. Add Draw_CenterPic to
r_progs.c, but this will only last till qpic_t is supported in qc.
the load menu almost works: just need to add key handling and fix a bug in
PF_sprintf
