Merges from SKY branch:

Merges from SKY branch:

        * blockframe.c(find_pc_sect_partial_function): look for min syms in
          the same section when trying to guess the end of a function.
        * symfile.c(list_overlays_command): use print_address_numeric
        * remote-sim.c: export simulator_command
        * tm-r5900.h: add COP0 registers
        * txvu-tdep.c: printvector and printvector-order commands
        * tm-txvu.h: add COP0 registers
        * mips-tdep.c: use NUM_CORE_REGS