  * configure.ac: output a few additional useful warnings.
  * configure.ac: output a few additional useful warnings.

garbear/libdvbpsi,vlc-mirror/libdvbpsi,cotdp/libdvbpsi,hiroshiyui/libdvbpsi,mkrufky/libdvbpsi,paraeco/libdvbpsi,vlc-mirror/libdvbpsi,Boxee/libdvbpsi,krieger-od/libdvbpsi,UIKit0/libdvbpsi,krieger-od/libdvbpsi,mwgoldsmith/dvbpsi,avble/libdvbpsi,UIKit0/libdvbpsi,vlc-mirror/libdvbpsi,paraeco/libdvbpsi,avble/libdvbpsi,paraeco/libdvbpsi,hiroshiyui/libdvbpsi,cotdp/libdvbpsi,paraeco/libdvbpsi,Boxee/libdvbpsi,mwgoldsmith/dvbpsi,mwgoldsmith/dvbpsi,Boxee/libdvbpsi,garbear/libdvbpsi,hiroshiyui/libdvbpsi,avble/libdvbpsi,UIKit0/libdvbpsi,mwgoldsmith/dvbpsi,mkrufky/libdvbpsi,garbear/libdvbpsi,krieger-od/libdvbpsi,mkrufky/libdvbpsi