[Gm2] latest changelog entries

[Gaius Mulley]

Hi,

here are the latest entries:

        * implemented logitech compatible library
          gm2/gm2-libs-pim/RealConversions.def and
          gm2/gm2-libs-pim/RealConversions.mod
        * added regression test for RealConversions
          testsuite/gm2/pimlib/logitech/run/pass/realconv.mod
        * fixed regression test expect script to set the
          library path correctly.
        * updated gm2/gm2-libs.texi to reflect addition of
          RealConversions.mod

I've performed simple tests on this module, and integrated these
within the regression tests. But I've not used exponent notation
in any Modula-2 programs, so my test cases are rather limited.
So please test...

Thanks,
Gaius