* config/i386/i386-interix.h: Remove uses of "register"
	specifier in declarations of arguments and local variables.
	* config/i386/i386.c: Likewise.
	* config/i386/i386elf.h: Likewise.
	* config/i386/ptx4-i.h: Likewise.
	* config/i386/sysv4.h: Likewise.

From-SVN: r75170