Lars added proc util_get_current_url. Removing updates of nsv apm_library_mtime that now happen in apm_source proc. Removing proc apm_mark_packages_for_bootstrap that was used to avoid server restart after package installation (we are now requiring server restart). Moving flushing of package_installed_p cache to happen at end of apm_package_install proc instead of the beginning. Adding parameter PermissionCacheTimeout that determines the lifetime of the permissions cache.