cppcheck-1.50

There was many fixes of false positives and serious problems like crashes, hangs, etc.

New checks:

* Check for std::auto_ptr misuse (related to strict ownership)
* Read array and then immediately check if the array index is within limits
* assign pointer to int/long
* assign bool to pointer
* duplicate "break" statements in switch
* matching "if" and "else if" conditions when using bitwise and
* matching assigment and condition when using bitwise and
* test if unsigned value is less than zero