gdb/

gdb/
	Code cleanup.
	* dwarf2read.c (alloc_one_comp_unit): Rename prototype to ...
	(init_one_comp_unit): ... this one.
	(prepare_one_comp_unit): New prototype.
	(dw2_require_line_header, process_psymtab_comp_unit): Use
	init_one_comp_unit.
	(process_psymtab_comp_unit): Use prepare_one_comp_unit.
	(load_partial_comp_unit): Remove variable attr.  Use
	init_one_comp_unit with xmalloc.  Use prepare_one_comp_unit.
	(load_full_comp_unit): Use init_one_comp_unit with xmalloc.  Use
	prepare_one_comp_unit.
	(read_signatured_type): Remove variable attr.  Use init_one_comp_unit.
	Use prepare_one_comp_unit.
	(alloc_one_comp_unit): Rename to ...
	(init_one_comp_unit): ... here and remove there calloc, new parameter
	cu.
	(prepare_one_comp_unit): New function.