* symfile.c (reread_symbols): When re-reading symbols, do all the

	* symfile.c (reread_symbols): When re-reading symbols, do all the
	right operations ourself, rather than calling symbol_file_command.
	If we re-read something, call clear_symtab_users not just
	breakpoint_re_set.
	* objfiles.h, objfiles.c (build_objfile_section_table): No longer
	static.
	* symfile.c (clear_symtab_users): Call clear_pc_function_cache.
	* coffread.c, dbxread.c, elfread.c, mipsread.c, nlmread.c, paread.c
	(*_symfile_offsets): Set objfile->num_sections.
	* remote.c (remote_wait), symfile.c (syms_from_objfile):
	Don't muck with objfile->num_sections now that all the symbol
	readers set it.
	* elfread.c: Clean up obsolete comment about handling only DWARF.
	* paread.c: Remove comment about how we should use an "ordinary"
	file format with an hppa suffix.  There is nothing ordinary about SOM.