FMSLogo Code

Fix a typo in a comment

Add a warning when a startup.logoscript file contains a vacuous copydef (copying to itself)

Minor changes:
- Fix typo in comment
- Add trailing comma to a list

Merge in changes from trunk to OPENAPPEND.

Document that the file API does BOM sniffing and creates text files with a UTF-8 BOM.

Minor changes to improve readability of OPENAPPEND documentation

Fix a typo in the opening sentence for OPENUPDATE

Silence warnings for new "allcaps" words in Unicode documentation for DLLCALL.

Remove trailing whitespace

Remove some English that slipped into an example for ASCIIPURO