CodeSnip Old Code (SVN)

* Changed to write units as UTF-8 files if source code can't be stored in default ANSI code page. Still uses ANSI default encoding otherwise.
* Ensured that unit names are valid strings in default ANSI encoding to ensure that unit file names contain no Unicode characters (this can make earlier Delphis fail to find file).

Development branch for CodeSnip release 4.

Initial source is a copy of v3.8.4 (r1075).