re PR bootstrap/49794 (Solaris 10/x86 bootstrap broken by C++ build)

re PR bootstrap/49794 (Solaris 10/x86 bootstrap broken by C++ build)

2011-07-20  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
	    Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>

	gcc:
	PR bootstrap/49794
	* configure.ac: Test AM_ICONV with CXX.
	* configure: Regenerate.
	* config/sol2-c.c (solaris_format_types): Use EXPORTED_CONST.

	gcc/ada:
	PR bootstrap/49794
	* init.c [sun && __SVR4 && !__vxworks] (__gnat_install_handler):
	Assign to act.sa_sigaction.
	* tracebak.c [USE_GENERIC_UNWINDER] (__gnat_backtrace): Cast
	current->return_address to char * before arithmetic.

	libcpp:
	PR bootstrap/49794
	* configure.ac: Test AM_ICONV with CXX.
	* configure: Regenerate.
	* system.h (HAVE_DESIGNATED_INITIALIZERS): Never define for C++.

Co-Authored-By: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
From-SVN: r176620