[Ohrrpgce] SVN: teeemcee/11170 Fix compiling with GCC 9+. Have to workaround a GCC bugfeature

[subversion at HamsterRepublic.com]

teeemcee
2019-07-11 07:22:39 -0700 (Thu, 11 Jul 2019)
252
Fix compiling with GCC 9+. Have to workaround a GCC bugfeature

See https://sourceforge.net/p/fbc/bugs/904/

Also fix or ignore a few GCC warnings. You should now see no warnings during
a compile! It seems GCC 9 fixes some previously spurious warnings.
---
U   wip/SConscript
U   wip/allmodex.bas
U   wip/surface.cpp