FMSLogo Code

Add SetAccelerators() to offer a table-driven API for setting keyboard shortcuts.
This makes the code smaller and easier to read.

Make NumPad Delete act like Delete in commander history.
This is part of Feature Request #121.

Add a comment about matching legacy MSWLogo behavior

Change Shift+Down at bottom of commander history to not jump to commander input box.
This is part of Feature Request #121.

Fix the Italian translations for X-Low and X-High in the "Select Active Area" dialog box
This is Bug #532.

Prepare FMSLogo to be translated to Solvene.
This is for Feature Request #120.

Improve the error reporting when files don't exist.

Add some instructions on how to add a new langauge to the build.
This was based on the experience of adding Slovene.

Fix a bug on GTK+ where Ctrl+D didn't work when the commander was docked

Fix a problem where the CRLF -> LF translation didn't work for UTF-16.
Of course, this is because the CRLF appears as CR-NUL-LF.
The short-term fix is to read-ahead with we get a CR to see if the next
character is an LF, and, if, translate to LF.

This is a short-term fix because it's implemented in a clumsy way
(with a seek, instead of a buffer) and because it only applies to one
format, whereas all formats should have a similar problem on GNU/Linux.