except.c (expand_eh_region_start_tree): Add DECL argument so we can better track why the region was made for error...

	* except.c (expand_eh_region_start_tree): Add DECL argument so we
 	can better track why the region was made for error reporting.
	* except.h (expand_eh_region_start_tree): Likewise.
	* tree.h (expand_dhc_cleanup): Likewise.
	(expand_dcc_cleanup): Likewise.
	* except.c (expand_eh_region_start_for_decl): New routine.
	* except.h (expand_eh_region_start_for_decl): Likewise.
	* stmt.c (expand_decl_cleanup): Add DECL to call of
	expand_eh_region_start_tree.
	(expand_dcc_cleanup): Likewise.
	(expand_dhc_cleanup): Likewise.

	(expand_start_case): Switches introduce conditional contexts.
	(expand_start_case_dummy): Likewise.
	(expand_start_case_dummy): Likewise.
	(expand_end_case): Likewise.

From-SVN: r13990