DCMTK

In header file "ofstd/include/ofstdinc.h", the macro USE_STD_CXX_INCLUDES should always be checked in order to decide whether to include the C++ ANSI standard includes or the old C++ includes. Currently, this is true for all but INCLUDE_CMATH, INCLUDE_CSTDDEF and INCLUDE_CSTDINT, which check with HAVE_CMATH, HAVE_CSTDINT and HAVE_CSTDDEF. See commits 076928b2 and 280f3991 where this inconsistency was introduced.