[config] If some files are missing in the repository, but are mentioned in the MANIFEST then Configure complains, saying that it can't continue without these files.  However, Configure continues anyway, which is not the intended behaviour.  This commit now causes Configure to exit instead of just return at this point.
[config] If some files are missing in the repository, but are mentioned in
the MANIFEST then Configure complains, saying that it can't continue without
these files.  However, Configure continues anyway, which is not the intended
behaviour.  This commit now causes Configure to exit instead of just return
at this point.


git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@21314 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

FROGGS/parrot,gagern/parrot,youprofit/parrot,gitster/parrot,tewk/parrot-select,youprofit/parrot,youprofit/parrot,tkob/parrot,gitster/parrot,tkob/parrot,gagern/parrot,parrot/parrot,tkob/parrot,parrot/parrot,youprofit/parrot,FROGGS/parrot,tewk/parrot-select,tkob/parrot,fernandobrito/parrot,gitster/parrot,fernandobrito/parrot,fernandobrito/parrot,FROGGS/parrot,fernandobrito/parrot,gagern/parrot,tkob/parrot,parrot/parrot,gagern/parrot,parrot/parrot,tewk/parrot-select,gagern/parrot,FROGGS/parrot,gagern/parrot,tkob/parrot,gitster/parrot,fernandobrito/parrot,tewk/parrot-select,tkob/parrot,parrot/parrot,tkob/parrot,youprofit/parrot,gitster/parrot,youprofit/parrot,FROGGS/parrot,gitster/parrot,youprofit/parrot,tewk/parrot-select,FROGGS/parrot,FROGGS/parrot,gitster/parrot,gagern/parrot,FROGGS/parrot,tewk/parrot-select,youprofit/parrot,fernandobrito/parrot,tewk/parrot-select,fernandobrito/parrot