Main

Adding fixed point type changes from a few weeks ago. This includes
significantly expanded tests.

Additional improvements to the fixed type. Also added a few good test
cases.

Modify template to include parameters for strtoXXX functions. Also begin
integrating support for 128 bit integer types.

Fix minor bug in int128.h. Also add initial unit tests.

Adding int128.h header with support for GCC specific int128_t and
uint128_t types.

Additional improvements to the fixed point type. Also adding parse_test
which can be used to compare parse performance and a CMakeLists.txt.

Adding initial attempt at creating a custom C++ fixed point template.

Adding local updates to display.py that were never properly committed.

Adding simple email test script to debug email-from-script issues.

Set CXXFLAGS and CFLAGS environment variables for whatever it's worth.