gdb/

gdb/
	Code cleanup.
	* parse.c (write_exp_elt): Change argument to pass a pointer of union
	`exp_element' instead of an element of the same and make the function
	static.
	(write_exp_elt_opcode, write_exp_elt_sym, write_exp_elt_block)
	(write_exp_elt_objfile, write_exp_elt_longcst, write_exp_elt_dblcst)
	(write_exp_elt_decfloatcst, write_exp_elt_type, write_exp_elt_intern):
	Change argument of `write_exp_elt' function call.
	Remove extra spaces from comments.
	* parser-defs.h (write_exp_elt): Remove prototype.