FMSLogo Code

Fix the "test" target after refactoring the source code into a different
Subversion project than "extras". This change ensures that you don't need
the "extras" project checked out to in order to run "gmake test" on the
"logo" project.

Reorganize the directory layout in subversion to make logo, www, and extra
all separate projects, each with their own branches and tags, instead of
all being part of a single project with sparely populated branches and tags.

This fits better with how it was in CVS and how it should have been imported
into Subversion. It also fits better with the development lifecycle of each
of the separate projects.

Never refresh the background when refreshing an invalid rectangle on the screen. Since the entire rectangle is always refreshed, there's no benefit to refreshing the background as well--doing so only slows down the repainting and adds more potential for flicker. In truth, this change has little practical benefit.

Update the expected version to 7.0.0, in preparation for the next release.

Update the test log to match the expected results for the wxWidgets version of FMSLogo. The log had previously been the output from the OWL version, but this version no longer exists.

Remove a work-around that was added for the Borland Resource Compiler which made the translated strings harder to read. Specifically, "http://" is no longer written as "http:\x2F/". Since FMSLogo is no longer compiled with Borland's compiler, this work-around is no longer needed.

Drop support for paletted display devices. After dropping suppport for Windows 95/98/ME, the logic for populating and clearing the system palette became unneeded as there are no longer any display devices which use a color palette. By removing the logic to support this now-defunct technology, the FMSLogo code base is made simpler and easier to port to a non-Windows platform using pure wxWidgets API.

Rework the #ifndef WX_PURE so that paste_all_turtles() is called
when compiling for non-Windows platforms (which was the entire
purpose of the previous change to make it take a wxDC, instead
of an HDC). So now the turtle appears on GNU/Linux.

Change paste_all_turtles so that it uses a wxDC instead of a HDC, which is only available on Windows. This was done to make the turtle appear on the experimental version of FMSLogo that runs on GNU/Linux.

Fix a problem introduced in the previous revision where the mkdir didn't get called (I had thought that "?" was the character that disables echo, but it's "@", and after using it, I released that it's not what I want either, as it doesn't mute the response).