[patch] Clean up detection of SJLJ exceptions in target libraries

[Jonathan Wakely]

On 12/05/15 18:42 +0200, Eric Botcazou wrote:
>libstdc++-v3/
>	* acinclude.m4 (GLIBCXX_ENABLE_SJLJ_EXCEPTIONS): Delete.
>	* configure.ac: Remove GLIBCXX_ENABLE_SJLJ_EXCEPTIONS.
>	* config.h.in: Regenerate.
>	* configure: Likewise.
>	* libsupc++/eh_personality.cc: Replace _GLIBCXX_SJLJ_EXCEPTIONS by
>	__USING_SJLJ_EXCEPTIONS__.
>	* libsupc++/eh_throw.cc: Likewise.
>	* libsupc++/eh_ptr.cc: Likewise.
>	* doc/html/manual/appendix_porting.html: Remove
>	GLIBCXX_ENABLE_SJLJ_EXCEPTIONS
>	* doc/xml/manual/build_hacking.xml: Likewise.
>	* doc/html/manual/configure.html: Remove --enable-sjlj-exceptions.
>	* doc/xml/manual/configure.xml: Likewise.

The libstdc++ parts are OK, thanks.