elm: Removed trailing whitespaces.

elm: Removed trailing whitespaces.

I always try to maintain elm with no trailing whitespaces. Please do not commit trailing whitespaces anymore.
I think maintaining a library clean is a good job. Once it gets mess, it's hard to fix them all at once.
1. Removing trailing whitespaces.
2. Fixing indentations.
3. Removing build errors and warnings.

SVN revision: 62595