configure.ac: automake v1.13 fix.
configure.ac: automake v1.13 fix.

Rename AM_CONFIG_HEADER to AC_CONFIG_HEADERS

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