PR 3591, PR 5676 - mcore C++

[Jakub Jelinek]

Hi!

Both these PRs are about the same thing:
mcore.h contains

/* The EPOC C++ environment does not support exceptions.  */
#define CC1_SPEC "-funsigned-bitfields %{!DIN_GCC:-fno-rtti} %{!DIN_GCC:-fno-exceptions}"

and thus cannot build libstdc++-v3 which requires exception (particularly
in configure when detecting exception model).
I'd say either it wants libstdc++ and then it shouldn't disable exceptions
nor rtti by default, or it doesn't want libstdc++ and should turn it of in
configury.

	Jakub