Add patchset for MGP-4.2.4, from upstream.

/trunk/patches/gmp/4.2.4/120-perfpow.patch | 149 149 0 0 ++++++++++++++++++++++
/trunk/patches/gmp/4.2.4/110-mpf_set_str.patch | 32 32 0 0 +++++
/trunk/patches/gmp/4.2.4/100-mpf_eq.patch | 219 219 0 0 ++++++++++++++++++++++++++++++++
3 files changed, 400 insertions(+)

 reporter_name="YEM"

 reporter_url="http://ymorin.is-a-geek.org/"

 reporter_comment=""