binary outsymbols

binary outsymbols

This fixes leaks of outsymbols for various targets that use the
generic linker.  The key fix here is to not generate output symbols
for targets that won't ever write symbols, and of course to free
outsymbols after they've been written in targets that do.  Target
vector object_flags and section_flags are updated to better reflect
target capabilities, in particular not setting HAS_SYMS or SEC_RELOC
when the target does not support symbols or relocs.

	* binary.c (binary_vec): Update section_flags.
	* linker.c (generic_add_output_symbol): Don't add to
	outsymbols if !HAS_SYMS.
	* srec.c (srec_write_symbols): Free outsymbols on return.
	(srec_vec): Update object_flags and section_flags.
	(symbolsrec_vec): Likewise.
	* tekhex.c (tekhex_write_object_contents): Free outsymbols on
	return.
	(tekhex_vec): Update object_flags and section_flags.
	* verilog.c (verilog_vec): Likewise.