* except.c (push_eh_entry): Eliminate start of exception region
label, as it isn't used. Rename end_label to outer_context.
(expand_eh_region_start_for_decl): Likewise.
(expand_leftover_cleanups): Likewise.
(expand_start_all_catch): Likewise.
* except.h (eh_entry): Likewise.
* except.c (expand_eh_region_end): Likewise. Jump around the nop
that we insert, so that we can optimize it away, if it is unused,
also so that flow analysis can tell if we fall through to the end
of a function or not so that it can know if a function that returns
a value, in fact does or not.
Fixes g++.jason/return2.C when using -fno-sjlj-exceptions
From-SVN: r14135
