Current Symbian^3 public API header files (from PDK 3.0.h)
This is the epoc32/include tree with the "platform" subtrees removed, and
all but a selected few mbg and rsg files removed.

 using _STLP_OLD_IO_NAMESPACE::strstreambuf;

 using _STLP_OLD_IO_NAMESPACE::istrstream;

 using _STLP_OLD_IO_NAMESPACE::ostrstream;

 using _STLP_OLD_IO_NAMESPACE::strstream;