Fixed #6196: Posix support for ignoreReturnValue and improved indentation of posix.cfg
astyle formatting

[ci skip]
Fixed #6203 (AST: fix problem with '; static_cast<...')
AST: improved handling of new
AST: don't hang when using auto in new statement
simplifyCalculations: Fix simplification of '( %num% )' when parentheses must be kept
Tokenizer::setVarId: don't set varid for 'auto' keyword
Fixed internal error, use Token::simpleMatch for pattern 'const new' instead of Token::Match
AST: generilized handling of auto usage in new statement
daca2: skip valgrind for now because it's extremely slow. see #6151
AST: fixed hang for 'new (int S::*[3][4][5])()' (clang test suite)
Tokenizer::simplifyRedundantParentheses: dont remove parentheses in 'void * operator new(SIZE_TYPE, int);'
AST: fixes for more new statements from clang test suite
AST: more fixes of new statements in clang test suite. some of it is not handled very well.
Merge branch 'master' into travis_gcc_testsuite