* arm/Makefile.in: Add support for new pid specs. * arm/coff-iq80310.specs: Change to allow future support. * arm/elf-iq80310.specs: Ditto. * arm/elf-redboot.specs: Ditto. * arm/coff-redboot.ld: Add EH frame support. * arm/redboot-crt0.S: Add optional code to clear bss without memset. * arm/coff-pid.specs: New file. * arm/elf-pid.specs: New file.