Make pbc_merge link on more platforms. notable HP-UX.
Make pbc_merge link on more platforms. notable HP-UX.

Thanks to Nick Glencross [perl #37651]


git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@9889 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

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