iprt/cidr.h: RTIPV4ADDR -> RTNETADDRIPV4. the dependencies are modified as well.
header (C) fixes
Automated rebranding to Oracle copyright/license strings via filemuncher
*: s/RT_\(BEGIN|END\)_DECLS/RT_C_DECLS_\1/g
iprt/*: __BEGIN_DECLS -> RT_BEGIN_DECLS; __END_DECLS -> RT_END_DECLS.
Renamed ip.cpp, tstIp.cpp and ip.h to cidr so they correspond to the prefix.