Run dos2unix to fix line endings

Without this opening a groovy file results in:

Error detected while processing /usr/share/vim/vim73/indent/groovy.vim:
line    5:
E492: Not an editor command: ^M
line    7:
E15: Invalid expression: exists("b:did_indent")^M
line  164:
E171: Missing :endif
Press ENTER or type command to continue

See https://bbs.archlinux.org/viewtopic.php?id=105759