Update to version 5.3.3

Changelog:

• Support Unicode aliases on Windows. Wcd for Windows with Unicode support stores the aliases now in UTF-8 format (like the paths). Old aliases with non-ASCII characters are not compatible anymore. You need to create new aliases.
• New option -ls: List the aliases. Thanks to Erik Rijshouwer.
• Code cleanup.
• Fixed makefiles for DJGPP, targets install and dist.