Makefile install target handles permissions better and added uninstall target
Makefile install target handles permissions better and added uninstall target

Makefile now changes the owner of the installed files to the user
running the install (root in most cases) and sets the permissions
appopriately -- world-readable for everything and directories and
libraries also get world executable.

Uninstall target just deletes the installed files.

Leont/libtap--,Leont/libtap--