xda_xcursor-themes: depends on libXcursor

While at it convert spaces to TABs

Signed-off-by: Darius Augulis <augulis.darius@gmail.com>
Signed-off-by: Paulius Zaleckas <paulius.zaleckas@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>