provisions for overflow in ref in correct fma testing
adapting tests to avoid overflow in signed integer fma
slightly changing divround scalar algo to avoid integer overflow
modifying test to avoid sqr overflow with signed integer in cover
Merge pull request #855 from jtlap/correct_fma_cover

provisions for overflow in ref in correct fma testing
Merge pull request #856 from jtlap/fma_cover

adapting tests to avoid overflow in signed integer fma cover
Merge pull request #858 from jtlap/sqr_cover

modifying test to avoid sqr overflow with signed integer in cover
can't use __has_feature like this in sqrs ubsan kludge
Merge pull request #857 from jtlap/remainder_divround

slightly changing divround scalar algo to avoid integer overflow
introduce USE_UBSAN macro to place workarounds for desired signed integer overflow
multiplies cumsum and muls had some overflow pb in cover. Just changing loops to avoid undue cases
Merge pull request #861 from jtlap/more_int_overflow_pbs

multiplies cumsum and muls had some overflow pb in cover. Just changing ...