Add vim 7.3 patchlevel 773.

	new file:   base/vim/vim-7.3-crontab.patch.xz
	new file:   base/vim/vim-7.3-logfiles.patch.xz
	new file:   base/vim/vim-7.3-nlpo.patch.xz
	new file:   base/vim/vim-7.3-slackware.patch.xz
	new file:   base/vim/vim-7.3-syntax20130121.patch.xz
	new file:   base/vim/vim-7.3-update773.patch.xz
	new file:   base/vim/vim-7.3-vimrcdir.patch.xz
	new file:   base/vim/vim.build