Fix x11-fm/nemo to build with glib-2.40.0, since with 2.39 g_memmove got
deprecated.

While here, instead of disabling tracker make it optional. Use the new option style
in brief mode.

Finaly, do some cosmetic changes.


git-svn-id: svn://creme-brulee.marcuscom.com/ports/trunk@19447 df743ca5-7f9a-e211-a948-0013205c9059