Change some more 0 literals into nullptr.
Merge pull request #241 from lanurmi/more-nullptr

Change some more 0 literals into nullptr.
Fixed #5468 (crash: freebsd: llvm/RegionPrinter.cpp - AST failure)
ValueFlow: Fixed bad values after break/continue
Symbol database: added simple mismatch check in Scope::findFunction when passing address to function that expects a reference
Fixed #5304 (Wrong simplification of numbers like 001E+07 to 1.0)
Revert "cxx11.h: removed the 'evil workaround'"

This reverts commit 2cb9032d76e2a6751b2b2a9458c6823e23fa1e21.
daca2: tell wget to overwrite file. We want that the correct file is used.
Fixed #5301 (False positive: (error) Division by zero - variables read from input stream)
Fixed #5434 (FP: Out-of-bounds access with ternary operator in loop)
#5304: added a losts of TODO testcases for MathLib::isFlot().
#5304: added a losts of TODO testcases for MathLib::isFloat().
TestMathLib: added robustness tests for testing MathLib::isFloat. Ensure it works correctly for preceeding and trailing white spaces.
daca2: fixed wget function
ci.py: fixed daca2folder() when results is empty
Fixed #5381 (Some false positives that came up when using --enable=performance file.c)
AST: improved AST printout when --verbose is used
Fixed #5304 (Wrong simplification of numbers like 001E+07 to 1.0)