FMSLogo Code

Make changes needed to get the Unicode branch to compile for Windows.

Add a debug form of wcsdup to the debug heap.
Otherwise, any code which calls wcsdup would use the wrong free() and crash.

Revert the changes to strdup() that made it use wchar_t*.
strdup() is defined by C to use char* and building for Unicode doesn't change that.

Fix copy&paste error in the copyright notice (I wrote this file this year).

Change "char" types to "wchar_t" to support Unicode.
This is a first step to supporting Unicode.

Merge in changes from trunk which remove a type cast.

Remove an unneeded type case.

Merge some typo fixes from trunk.

Fix a misleading comment.

Fix a typo in a comment.