added more info to the rrt_init fxn to give more info on what it actually does
changed interactive to be TRUE by defaul in rrt_init
moved fxns that were in rrt_init file to sep files for each function
added links to other similar fxns via seealso in rrt_refresh _init and _install
pkg_urls not exported now, is not used anymore
no Rd file created for getPkgs now
no Rd file created for repodeps fxn now, still exported though, just using keywords internal