* mipsread.c (parse_partial_symbols): Complain about block
indexes that go backwards. Fix from Peter Schauer.
* symfile.c (syms_from_objfile, symbol_file_add): Allow a
symbol-file that has no linkage symbols to be read.
* tm-rs6000.h, xm-rs6000.h: (SIGWINCH_HANDLER and friends): Move
from tm- file to xm-file, since they're host dependent.
* valarith.c (value_binop): Typo.