fix tests on perls compiled with usequadmath; prepare for release 0.14
relax compiler version detection; prepare for release 0.35
fix compilation in Travis CI where Module::CAPIMaker tools are not installed
really fix Travis compilation, perl 5.19 is not supported anymore
Dump full compiler info when running on CPAN tester
Apple clang uses a custom version format; prepare for release 0.16_02
Add a .gitignore file
Use Config::AutoConf to check compiler capability rather than version

This is a bit more forward looking than checking for specific versions, and it
will work with any random compiler than implements the unsigned __int128 type.

I also did a little general cleanup on the Makefile.PL while I was in there.
Add Capture::Tiny for Config::AutoConf
Remove some unneeded params passed to WriteMakefile
Ignore Makefile.old file
Check for the 'unsigned int __attribute__ ((__mode__ (TI)))' type as well as 'unsigned __int128'
Fix typo in comment
Fix right & left shifts for all types, as well as <<= and >>=
Changes for shift fixes