Okay, this is preparation for the freetype support, this shouldn't cause any obvious...

Okay, this is preparation for the freetype support, this shouldn't cause any obvious changes, if it does, tell me.
Basically, this replaces all stringwidth()*size calls to pass the size parameter to stringwidth() directly.
Also, it adds some default parameters to the loadfont command... not sure why I'm adding this so early though... but it won't error out anyway so it shouldn't be harmful.

git-svn-id: svn://svn.icculus.org/nexuiz/trunk@7611 f962a42d-fe04-0410-a3ab-8c8b0445ebaa