Extend libcc1's with an API for C++ support.

Extend libcc1's C API to distinguish between integral types with the
same width, as in C++.  Likewise for float types.

Export small bits of functionality from the C++ front-end for use in
libcc1.  Add support for the C++ front-end to look up names and
addresses using a libcc1-registered binding oracle.  Add support for
global friends.


for  gcc/cp/ChangeLog

	Introduce C++ support in libcc1.
	* cp-tree.h (struct lang_identifier): Add oracle_looked_up.
	(ansi_opname): Rename to...
	(cp_operator_id): ... this.  Adjust all callers.
	(ansi_assopname): Rename to...
	(cp_assignment_operator_id): ... this.  Adjust all callers.
	(cp_literal_operator_id): Declare.
	(set_global_friend): Declare.
	(is_global_friend): Declare.
	(enum cp_oracle_request): New type.
	(cp_binding_oracle_function): New type.
	(cp_binding_oracle): Declare.
	(cp_finish_injected_record_type): Declare.
	* friend.c (global_friend): New var.
	(set_global_friend): New fn.
	(is_global_friend): New fn.
	(is_friend): Call is_global_friend.
	* name-lookup.c (cp_binding_oracle): New var.
	(query_oracle): New fn.
	(qualified_lookup_using_namespace): Call query_oracle.
	(lookup_name_real_1): Likewise.
	* parser.c (cp_literal_operator_id): Drop static.
	* search.c (friend_accessible_p): Call is_global_friend.
	* semantics.c (is_this_parameter): Accept a variable if the
	binding oracle is enabled.

for  include/ChangeLog

	Introduce C++ support in libcc1.
	* gcc-c-fe.def (int_type_v0): Rename from...
	(int_type): ... this.  Introduce new version.
	(float_type_v0): Rename from...
	(float_type): ... this.  Introduce new version.
	(char_type): New.
	* gcc-c-interface.h (gcc_c_api_version): Add GCC_C_FE_VERSION_1.
	(gcc_type_array): Move...
	* gcc-interface.h: ... here.
	* gcc-cp-fe.def: New.
	* gcc-cp-interface.h: New.

for  libcc1/ChangeLog

	Introduce C++ support.
	* Makefile.am (AM_CPPFLAGS): Move some -I flags to...
	(CPPFLAGS_FOR_C_FAMILY, CPPFLAGS_FOR_C, CPPFLAGS_FOR_CXX): ...
	new macros.
	(plugin_LTLIBRARIES): Add libcp1plugin.la.
	(BUILT_SOURCES, MOSTLYCLEANFILES): Add...
	(cp-compiler-name.h): ... this.  New.
	(c-compiler-name.h): Rename all over from...
	(compiler-name.h): ... this.  Create it atomically.
	(marshall_c_source, marshall_cxx_source): New macros.
	(libcc1plugin_la_SOURCES): Rename plugin.cc to libcc1plugin.cc.
	Add marshall_c_source expansion.
	(libcc1plugin.lo_CPPFLAGS): New macro.
	(libcp1plugin_la_LDFLAGS): Likewise.
	(libcp1plugin_la_SOURCES): Likewise.
	(libcp1plugin.lo_CPPFLAGS): Likewise.
	(libcp1plugin_la_LIBADD): Likewise.
	(libcp1plugin_la_DEPENDENCIES): Likewise.
	(libcp1plugin_la_LINK): Likewise.
	(libcc1_la_SOURCES): Added marshall_c_source and
	marshall_cxx_source expansions.
	* Makefile.in: Rebuild.
	* compiler-name.h: Rename all over to...
	* c-compiler-name.h: ... this.  Define C_COMPILER_NAME instead
	of COMPILER_NAME.
	* plugin.cc: Rename all over to...
	* libcc1plugin.cc: ... this.  Include marshall-c.hh.
	(address_rewriter): Drop cleaning up of VLA sizes.
	(plugin_build_decl): Mark decls as external.
	(plugin_tagbind): Propagate name to all variants.
	(build_anonymous_node): New.
	(plugin_build_record_type): Use it instead of make_node.
	(plugin_build_union_type): Likewise.
	(plugin_build_enum_type): Likewise.
	(plugin_finish_record_or_union): Update all type variants.
	(safe_lookup_builtin_type): New.
	(plugin_int_check): Factor out of, and add checks to, ...
	(plugin_int_type): ... this.  Rename to...
	(plugin_int_type_v0): ... this.
	(plugin_int_type): New interface, new implementation.
	(plugin_char_type): New.
	(plugin_float_type_v0): Rename from...
	(plugin_float_type): ... this.  New interface, new implementation.
	(plugin_init): Bump handshake version.
	* libcc1.cc: Include marshall-c.hh.  Drop gcc-interface.h.
	(call_binding_oracle): Rename to...
	(c_call_binding_oracle): ... this, into anonymous namespace.
	(call_symbol_address): Rename to...
	(c_call_symbol_address): ... this, likewise.
	(GCC_METHOD#): Move methods into cc1plugin::c:: namespace.
	(libcc1::compiler::find): Refer to C_COMPILER_NAME.
	(fork_exec): Bump to GCC_C_FE_VERSION_1.
	(libcc1_compile): Prefix callbacks with c_.
	(gcc_c_fe_context): Accept GCC_C_FE_VERSION_1.
	* libcc1.sym: Export gcc_cp_fe_context.
	* libcp1.cc: New, mostly copied and adjusted from libcc1.cc.
	* libcp1plugin.cc: New, initially copied from libcc1plugin.cc.
	* libcp1plugin.sym: New.
	* marshall-c.hh: New.  Move C-specific types from...
	* marshall.cc: ... this.
	(cc1_plugin::marshall_array_start): New.
	(cc1_plugin::marshall_array_elmts): New.
	(cc1_plugin::marshall for gcc_type_array): Use the above.
	(cc1_plugin::unmarshall_array_start): New.
	(cc1_plugin::unmarshall_array_elmts): New.
	(cc1_plugin::unmarshall for gcc_type_array): Use the above.
	* marshall.hh: Declare the new array building blocks.
	Drop C-specific unmarshall declarations.
	* marshall-cp.hh: New.
	* names.cc (GCC_METHOD#): Add LANG:: to method names.
	(LANG): Define while including gcc-c-fe.def and gcc-cp-fe.def.
	* names.hh: Include gcc-c-fe.def and gcc-cp-fe.def in the
	corresponding namespaces.
	* rpc.hh: Don't include marshall.hh.
	[GCC_CP_INTERFACE_H] (argument_wrapper): Specialize for
	gcc_vbase_array, gcc_cp_template_args, gcc_cp_function_args.

From-SVN: r245051