Add ./configure access to some new CPUs without having to bump 2.68->2.69

See issue #557 refering to aarch64 support.
Use latest libuninameslist as default if you have it.
Hush a warning: suggest parentheses around comparison in operand of '=='
More credits, stopped reading at git 2003-04-05 for now...

..also include some very recent authors before making the next prep+build
Merge pull request #639 from JoesCat/master

More Authors, guess aarch64, choose libuninameslist, hush a warning