FMSLogo Code

Fix a problem that prevented "make test" from running on GNU/Linux
The name of Logolib was made lower-case.

Cleanup: Remove wxpurestubs.cpp
The GNU/Linux wxWidgets has come far enough that it is no longer needed.

Cleanup: remove dib.cpp and dib.h. These were no longer used.

Move the timer functions out of mmwind.cpp and into timer.cpp and integrate it into the WX_PURE build.
This was done enable SETTIMER and CLEARTIMER on GNU/Linux, a requirement for playing asteriod miner.
It's also cleaner to keep the timer-related functions separate from the multi-media functions.

Port SETTIMER and CLEARTIMER to wxWidgets
This was done to make those procedures functional on GNU/Linux, a necessity for running asteroid miner.

Add TIMERTEST.OVERWRITE to test that calling SETTIMER twice in a row implicitly calls CLEARTIMER on the first timer.
I don't know if this is intentional behavior, but it's how MSWLogo behaved so it should be preserved for compatibility.

Remove some explicit uses of static_cast<>() to cast to native handles.
The wxWidgets API is set up to do this cast implicitly.

Fix build breaks when compiling the screen saver that were introduced by recent changes to LABEL and LABELSIZE.

#include fontutils.h from fontutils.cpp.
It's a good practice to include the interface that you're implementing.

Fix some minor issues with the "restart with good aspect ratio" logic.
1) An IF that was used as an IFELSE is now an IFELSE.
2) The -H parameter was given with a decimal point (which was then
ignored due to compatibility with historically sloppy command line
parsing. The -H command-line parameter is now given as an INT.
3) The command line to run manually (when automatic restart fails) is now
given on a separate line for readability.

None of these issues prevented the code from doing what it was supposed to do.