iprt/cpp/list.h,iprt/cpp/mtlist.h: Added assertions for index out of range conditions and tried to force those cases to have predictable non-destructive behavior. (Not possible when indexing an empty list, unfortunately.) Fixed RTMemRealloc bugs. Added missing read locking. Also changed the testcase to not wait forever in the multithreaded test2() function.

IPRT: fix assigning of empty lists

iprt-cpp: More RTC*List methods. Added explicit constructors to the specializations.

IPRT-C++: iprt::list -> RTCList; iprt::mtlist -> RTCMTList

iprt::MiniString -> RTCString.

IPRT-C++: fix rel build boxes

IPRT-C++: add a thread-safe variant of the generic list class

iprt/C++: some cleanup.

IPRT: add a generic list class