* JBigI:
      - Add new libjbigi-linux-xxx.so files built by sponge, now that we have
        CPUID.java support for them (thanks hottuna).
        See http://zzz.i2p/topics/306 for discussion and test results.

        64-bit processors (atom, core2, corei, nano):
        Built with GMP 5.0.2. License is LGPLv3.
        Built by sponge with GCC 4.4.4, downloaded from
        http://sponge.i2p/files/jbigi/gmp-5.0.2/
        For 64-bit processors, both performance testing and
        the GMP changelog http://gmplib.org/gmp5.0.html led us to use 5.0.2
        for both the 32- and 64-bit versions, even though the files are twice as big.
        5.0.x contains specific optimizations for atom and nano.
        All 64-bit libs have _64 appended.

        32-bit processors (pentiumm, geode):
        Built with GMP 4.3.2. License is LGPLv3.
        Built by sponge with GCC 4.4.4, downloaded from
        http://sponge.i2p/files/jbigi/gmp-4.3.2/
        The 4.3.2 files are half the size of those built with GMP 5.0.2, and there was
        little or no performance difference between the two versions for 32 bit processors.