Revert "Fix inability of libdvd 4.2.0 to read DVDs stored as VIDEO_TS files on non-Windows OSs."

This reverts commit 3708d886958258fcf18fe827eb8ab32ecda45943.

Conflicts:
	lib/libdvd/libdvdread/src/dvd_reader.c
Revert "libdvdread: replace perror by fprintf so that it gets picked up in xbmc logs"

This reverts commit cffa18401f642b35a91de7e5b1e184f1dc0bef6d.
Revert "[dvdread] - don't check the return value of chdir in xbmc - this function is not wrapped and might fail (and so will the whole dvd open in that case). This is non fatal for our vfs!"

This reverts commit cb345a7e3cde07506bf3a2d696fcbb3dff44477d.