.ctags: Remove comment lines that trip up Exuberant.
.ctags: Exclude minified versions of Javascript sources.

List several by name in case the ctags in use isn't built with
"+wildcards".
bash: Add support for multiple arguments to the mingw-specific winpath
function. Quote the arguments passed to the mingw gvim launcher.
Add bash completion for Rake.
Remove the -B option from the common `ls' options.