fix Issue 10715 - negated bit test (bt) not recognized by optimizer
Merge pull request #2389 from WalterBright/fix10715

fix Issue 10715 - negated bit test (bt) not recognized by optimizer
fix issue 10721 - ICE with constructor with postcondition
Merge pull request #2390 from hpohl/10721

[REG2.064a] fix issue 10721 - ICE with constructor with postcondition