Build mkgmap/mkgmap #1200

mdrUnicode_v9a.patch by Ticker Berkin "While looking at the mdr output from Mapinstall and the differences in the street repeat flags, mainly where there are shield/road-ref entries, I realised my change to Sort.java for undefined sortOrder went to far and it disrupts this ordering for Unicode. Missing or 0 sortOrder (anything before the first "<" in sort/cp*.txt) means the character is ignored by the key sort and collator.compare(), so TERTIARY and EQUAL can give different answers. Attached is mdrUnicode_v9a.patch that generates a fake sortOrder only for rows where no sortOrders are defined, instead of for anything in Unicode with no/0 sortOrder. With this patch it becomes possible for Unicode to trigger the original problem again."