Added atom tuning values. Thanks Jason Preszler.
Add missing fat tuning values.
Fixed an aliasing bug in nthroot.
Added tuning values for IvyBridge.
Added test case for nthroot aliasing and fixed code.
Update tuning values for x86_64w/fat.
Attempt to fix fat build on MinGW64.
Merge remote-tracking branch 'brian/master'

Conflicts:
	tests/cxx/t-assign.cc
Whoops, we defined GMP_CC twice.
Experiment with correct size_t format specifier.
tuning plus cosmetic change to mpir_config.py
Attempt to fix some compiler warnings on MinGW64.
Merge branch 'master' of https://github.com/wbhart/mpir
update all Visual Studio builds for latest name changes