value flow: bailout if condition is defined by macro
Tokenizer: Move 'else if' simplification to tokenize
value flow: some simplifications in unknown functions when there is library configuration
CheckNullPointer: improved function call checking when new value flow analysis is used
value flow: inconclusive handling of unknown functions
value flow: use checknullpointer checking based on new value flow analysis in the TestNullPointer
Fixed cppcheck warning