Oranize the PPH tree switch into tcc_* chunks, in each of four sections:

Oranize the PPH tree switch into tcc_* chunks, in each of four sections:
needs more work, already handled, unimplemented, and unrecognized.

Implement several C++ tree nodes.  These nodes do not get any more tests
to pass, but they do move the failures deeper into the compilation.

Index: gcc/cp/ChangeLog.pph

2011-05-26  Lawrence Crowl  <crowl@google.com>

	* cp-objcp-common.c (cp_tree_size): Add case TREE_BINFO.
	* pph.c (pph_read_file): Also log closing of PPH files.
	* pph-streamer-in.c (pph_stream_read_tree):
	Organize the switch into tcc_* chunks.
	Move tcc_statement case STATEMENT_LIST down.
        Implement tcc_type cases for BOUND_TEMPLATE_TEMPLATE_PARM,
	DECLTYPE_TYPE, TEMPLATE_TEMPLATE_PARM, TEMPLATE_TYPE_PARM,
	TYPENAME_TYPE, and TYPEOF_TYPE.
	Implement tcc_exceptional case TEMPLATE_PARM_INDEX.
	Add tcc_declaration case TRANSLATION_UNIT_DECL to already handled list.
        Create a section for unimplemented cases as opposed to unrecognized
	cases.
	* pph-streamer-out.c (pph_stream_write_tree):
	Organize the switch into tcc_* chunks.
	Move tcc_statement case STATEMENT_LIST down.
	Implement tcc_type cases for BOUND_TEMPLATE_TEMPLATE_PARM,
        DECLTYPE_TYPE, TEMPLATE_TEMPLATE_PARM, TEMPLATE_TYPE_PARM,
	TYPENAME_TYPE, and TYPEOF_TYPE.
        Move tcc_statement case STATEMENT_LIST down.
	Implement tcc_exceptional case TEMPLATE_PARM_INDEX.
	Add tcc_declaration case TRANSLATION_UNIT_DECL to already handled list.
        Create a section for unimplemented cases as opposed to unrecognized
	cases.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/pph@174316 138bc75d-0d04-0410-961f-82ee72b054a4