* gdbserver/linux-low.c (usr_store_inferior_registers): Support
registers which are allowed to fail to store.
* gdbserver/linux-low.h (linux_target_ops): Likewise.
* gdbserver/linux-ppc-low.c (ppc_regmap): Support FPSCR.
(ppc_cannot_store_register): FPSCR may not be storable.
* regformats/reg-ppc.dat: Support FPSCR.
* regformats/reg-arm.dat: New file.
* regformats/reg-i386.dat: New file.
* regformats/reg-ia64.dat: New file.
* regformats/reg-m68k.dat: New file.
* regformats/reg-mips.dat: New file.
* regformats/reg-ppc.dat: New file.
* regformats/reg-sh.dat: New file.
* regformats/regdef.h: New file.
* regformats/regdat.sh: New file.