* target-def.h (TARGET_CXX_EXPORT_CLASS_DATA): Remove.
	(TARGET_CXX_DETERMINE_CLASS_VISIBILITY): New macro.
	(TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT): Likewise.
	(TARGET_CXX): Adjust accordingly.
	* target.h (struct gcc_target): Remove epxort_class_data.  Add
	determine_class_data_visibility and class_data_always_comdat.
	* doc/tm.texi (TARGET_CXX_EXPORT_CLASS_DATA): Remove.
	(TARGET_CXX_DETERMINE_CLASS_DATA_VISIBILITY): Document.
	(TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT): Likewise.
	* config/arm/arm.c (arm_cxx_export_class_data): Remove.
	(arm_cxx_determine_class_data_visibility): New.
	(arm_cxx_class_data_always_comdat): Likewise.
	(TARGET_CXX_EXPORT_CLASS_DATA): Remove.
	(TARGET_CXX_DETERMINE_CLASS_DATA_VISIBILITY): Define.
	(TARGET_CXX_CLASS_DATA_ALWAYS_COMDAT): Likewise.
	* config/arm/arm.h (TARGET_ARM_DYNAMIC_VAGUE_LINKAGE_P): Define.
	* config/arm/symbian.h (TARGET_ARM_DYNAMIC_VAGUE_LINKAGE_P):
	Define.

	* decl2.c (determine_visibility): Don't use export_class_data.
	(import_export_decl): Honor TARGET_CXX_CLASS_DATA_ALWAYS_WEAK and
	TARGET_CXX_DETERMINE_CLASS_DATA_VISIBILITY.

	* testsuite/g++.dg/ext/visibility/arm2.C: New test.
	* testsuite/g++.dg/ext/visibility/arm3.C: Likewise.
	* testsuite/g++.dg/ext/visibility/symbian2.C: Likewise.

From-SVN: r98010