FMSLogo Code

Make the variable name "foo lower-case in THING documentation.
This was done for improved conformance to the style guide.

Fix two trivial problems with IGNORE documentation:
- input was named "list" when in fact it can be any thing
- description didn't start with a fragment (style guide violation)

Fix a problem that prevented auto-complete from working on non-ASCII prefixes.
The root of the problem was that Scintilla uses UTF-8 and the "length" that it wants is bytes, not characters.

Merge in changes from trunk to get fixes to auto completion

Refactoring: Remove the need to Trim by not including leading whitespace in token.
This has no functional change in the 7.X series, but will be helpful when supporting Unicode in 8.X.

Fix Bug #538; Auto-completion now ignores case for non-ASCII letters.

Add a manual regression test for completing procedure names across line continuation boundaries.
This currently fails.

Add a manual regression test for syntax coloring of variables across line continuations.
This currently fails.

Fix OPENAPPEND to honor the BOM of the file to which its appending.
Because fopen in "a" mode doesn't allows seeking, it was not possible to read the BOM file the FILE that was opened. Instead, the different FILE is opened for reading, just to get the BOM.

Fix FILETEST.OPENAPPEND.SETWRITEPOS for a Unicode FMSLogo