./

./
	* Makefile.in (dwarf2read.o): Update dependencies.
	* dwarf2read.c: Include "command.h" and "gdbcmd.h".
	(MAX_CACHE_AGE): Remove.
	(dwarf2_max_cache_age): New variable.
	(free_comp_units_worker): Update.
	(set_dwarf2_cmdlist, show_dwarf2_cmdlist, set_dwarf2_cmd)
	(show_dwarf2_cmd): New.
	(_initialize_dwarf2_read): Provide "maint set dwarf2 max-cache-age"
	and "maint show dwarf2 max-cache-age".
	* gdbcmd.h (maintenance_set_cmdlist, maintenance_show_cmdlist): New
	externs.
	* maint.c (maintenance_set_cmdlist, maintenance_show_cmdlist): Make
	global.
doc/
	* gdb.texinfo (Maintenance Commands): Document "maint set dwarf2
	max-cache-age" and "maint show dwarf2 max-cache-age".