-Fix (r15892 and others) [FS#6069]: [OSX] Compilation fails with some lzo2 versions if we define __LP64__ as 0 instead of checking whether it is defined (kernigh2)

git-svn-id: svn://svn.openttd.org@26709 6aa0318a-3be1-0310-93fa-89fd2396df07