OpenBSD does not have gssapi_krb5. So, to avoid undefined symbol errors, link libxul with "-lkrb5 -lcrypto". OK phessler@, landry@ (MAINTAINER)
Convert port to use mozilla MODULE, which gains us --enable-libxul, so way less libs are installed. Bring patches/files inline with other mozilla ports. java plugin still works. ok/testing sthen@ naddy@