Fixed #6353 (False positive: CheckBufferOverrun checking reassigned array function parameter)
Incomplete statement: tweaked bailout for '0;' statement using isExpandedMacro()
Fix C++11 compat wrapper for clang

clang identifies itself as gcc 4.2.
The preprocessor macros can be dumped with:
     clang++ -dM -E -x c /dev/null
Fixed #6349 (Pointer arithmetic: clarify message)
Merge branch 'master' into travis_gcc_testsuite