win32: canonicalise source_dir, HUGSDIR, target
win32: canonicalise source_dir, HUGSDIR, target
FranklinChen/Hugs,FranklinChen/Hugs,FranklinChen/Hugs,FranklinChen/Hugs,FranklinChen/Hugs,FranklinChen/Hugs,FranklinChen/Hugs