gdb

gdb
	PR gdb/2484:
	* symtab.c (struct add_macro_name_data): New struct.
	(add_macro_name): New function.
	(default_make_symbol_completion_list): Complete macro names.
	* scm-lang.c (scm_language_defn): Update.
	* p-lang.c (pascal_language_defn): Update.
	* objc-lang.c (objc_language_defn): Update.
	* macrotab.h (macro_callback_fn): Add user_data argument.
	(macro_for_each): Likewise.
	(macro_for_each_in_scope): Declare.
	* macrotab.c: (struct macro_for_each_data): New struct.
	(foreach_macro): Use it.
	(macro_for_each): Likewise.
	(foreach_macro_in_scope): New function.
	(macro_for_each_in_scope): Likewise.
	* macrocmd.c (print_one_macro): Add argument.
	(macro_list_command): Pass NULL to macro_for_each.
	* m2-lang.c (m2_language_defn): Update.
	* language.h (struct language_defn) <la_macro_expansion>: New
	field.
	(macro_expansion): New enum.
	* language.c (unknown_language_defn): Update.  Fix order of
	initializers.
	(auto_language_defn): Likewise.
	(local_language_defn): Update.
	* jv-lang.c (java_language_defn): Update.
	* f-lang.c (f_language_defn): Update.
	* c-lang.c (c_language_defn): Update.
	(cplus_language_defn): Likewise.
	(asm_language_defn): Likewise.
	(minimal_language_defn): Likewise.
	* ada-lang.c (ada_language_defn): Update.
gdb/testsuite
	* gdb.base/macscp.exp: Add completion tests.
	* gdb.base/macscp1.c (FIFTY_SEVEN): New macro.
	(TWENTY_THREE): Likewise.
	(FORTY_EIGHT): Likewise.