Committing some updates. Added a package dependency module that lets you check
for needed modules in the dev environment.

	modified:   fun.sh
   modified:   mount.sh
	new file:   pkgdeps.sh
	modified:   rbt.sh
	modified:   ssh.sh
   More commits... not sure yet.

   modified:   edit.sh
	modified:   fun.sh
	modified:   mount.sh
	modified:   pkgdeps.sh
	modified:   rbt.sh