PR symtab/8423:

	PR symtab/8423:
	* solib-som.c (som_solib_section_offsets): Use BFD section
	indices.  Set offsets for all sections.
	* somread.c (som_symtab_read): Compute BFD section for
	symbol.  Use prim_record_minimal_symbol_and_info.
	(som_symfile_read): Fix comment.
	(struct find_section_offset_arg): New.
	(find_section_offset, set_section_index): New functions.
	(som_symfile_offsets): Use set_section_index to compute
	section indices.
bfd/
	* som.c (bfd_section_from_som_symbol): No longer static.
	* som.h (bfd_section_from_som_symbol): Declare.