+ removed HAVE_CUDA #defines, dead code path
+ AVX2 enhancements to sieve of eratosthenes (presieving) + bug fixes related to test sieving interface (thanks dubslow!) + added extra strong selfridge (using extra strong lucas) and extra strong bpsw (using extra strong selfridge) tests
Authored by: bbuhrow 2016-07-15
Parent: [r352]
Child: [r354]