* som.c (som_object_setup): Do not create dummy ".text", ".data",

	* som.c (som_object_setup): Do not create dummy ".text", ".data",
	and ".bss" sections.
	(setup_sections): Do not set SEC_HAS_CONTENTS if a section's size
	is zero.  Recognize BSS type sections and turn off SEC_LOAD and
	SEC_DATA (so binutils/size works).  Set the correct value for
	a section's _raw_size.
	(som_slurp_symbol_table): Program entry points, and millicode are
	also functions.  Mark them as such.  Also mark L$* symbols as
	debugging symbols.