Remove Java 7 warning for Mac OS X users.
Minor formatting cleanup.
Use new Minecraft download location.
Use Minotar for avatar helms for now, fixes excessive cache issues.
Temp fix for old Minecraft URL.
Fix portable mode
Fix invalid working directory crash by using system temp directory for temp dl
Allow older launchers to update correctly
Fix for working directory NPE
Fix minecraft.jar version format in URL for 1.4.7.
Remove old character skin resources.
Pass MC applet working directory path
Added dynamic LWJGL support. Doesn't fully work yet. Need API fixes.

Fixed old assets download

Signed-off-by: William Lebel <lebelwilliam@gmail.com>
Merge pull request #54 from greatman/master

Made LWJGL dynamic / Fixed old assets download
Merge pull request #12 from Legacy/master

Sync with upstream