FMSLogo Code

Increment the version to 7.3.0 for a formal release.
This was motivated by the need to release the fix for Bug #518.

Remove command translations into Portuguese which duplicated a translation of different command and so was ignored.
This should have no functional impact, since I only removed the translations that were ignored by FMSLogo. This change improves the code base by making the code reflect the actual behavior. It also removes the spurious entries from the translation tables in the manual.

Remove command translations into Italian which duplicated a translation of different command and so was ignored.
This should have no functional impact, since I only removed the translations that were ignored by FMSLogo. This change improves the code base by making the code reflect the actual behavior. It also removes the spurious entries from the translation tables in the manual.

Remove the spurious French translation for DEFINEDP and DEFINED?
The same words (procédurep/procédure?) were used as translation for PROCEDUREP/PROCEDURE? and since the same name cannot be given to two procedures, FMSLogo used them for PROCEDUREP/PROCEDURE?. This should have no functional impact, since I only removed the translations that were ignored by FMSLogo. This change improves the code base by making the code reflect the actual behavior. It also improves the manual by removing incorrect translations from the translation tables.

Add a simple manual regression test to make sure that Greek characters can be drawn to the screen.

Remove the spurious German translation for SETPOSXYZ
The same word (AUFXYZ) was used as a translation for SETXYZ and since the same name cannot be given to two procedures, FMSLogo used it for SETXYZ. This should have no functional impact, since I only removed the translation that was ignored by FMSLogo. This change improves the code base by making the code reflect the actual behavior.

Apply the fix for Bug #518 to the Greek version
The same problem that caused Cyrillic characters appear as NUL in the Russian version of FMSLogo also caused Greek characters to appear as NUL in the Greek version.

Remove the spurious Greek translation for EDIT
The same word (ΕΠΕΞΕΡΓΑΣΙΑ) was used as a translation for PARSE and since the same name cannot be given to two procedures, FMSLogo used it for PARSE. This should have no functional impact, since I only removed the translation that were ignored by FMSLogo. This change improves the code base by making the code reflect the actual behavior. It also removes the spurious entries from the translation tables in the manual.

Fix Bug #518; The Russian version now uses a code editor that accepts Cyrillic
This addresses a regression in the upgrade from wxWidgtes 2.18 to 3.1 which broke ANSI wxStyledTextCtrl for some code pages. This change has reduced functionality from FMSLogo 6.35 (no more paren matching, auto code completion, or syntax highlighting), but it's better than 7.2.0, which was completely unusable as no cyrillic text could be typed into it.

Add a simple manual regression test to make sure that Cyrillic can be drawn to the screen.