(SECONDARY_MEMORY_NEEDED): Simplify.

(ADDITIONAL_REGISTER_NAMES): Define.
(CONDITIONAL_REGISTER_USAGE): Make PIC_OFFSET_TABLE_REGNUM fixed
again.
(FIRST_PSEUDO_REGISTER): Now 89.
(FIXED_REGISTERS): Delete 1.0 fp registers,
(CALL_USED_REGISTERS): Likewise.
(CONDITIONAL_REGISTER_USAGE): Almost deleted.
(REG_ALLOC_ORDER): Update register numbers.
(HARD_REGNO_NREGS): Delete special case for 1.0 fp registers.
(HARD_REGNO_MODE_OK): Rewrite.  Don't allow use of odd fp registers
(enum reg_class): Delete HI_SNAKE_FP_REGS and FP_OR_SNAKE_FP_REGS.
(REG_CLASS_NAMES): Corresponding change.
(REG_CLASS_CONTENTS): Delete HI_SNAKE_FP_REGS and
FP_OR_SNAKE_FP_REGS.  Make SNAKE_FP_REGS class contain all fp
registers.  Update all values for changed register numbering.
(REGNO_REG_CLASS): Corresponding changes.
(REG_CLASS_FROM_LETTER): Delete 'y'.
(FP_REG_CLASS_P): No longer test HI_SNAKE_FP_REGS.
(CLASS_MAX_NREGS): Delete special case for 1.1 fp registers.
(FUNCTION_VALUE): Remove TARGET_SNAKE conditionals.
(LIBCALL_VALUE): Likewise.
(FUNCTION_ARG_REGNO_P): Likewise.
(FUNCTION_VALUE_REGNO_P): Likewise.  Add registers 29 and 33.
(FUNCTION_ARG): Remove TARGET_SNAKE conditionals.  Update register
numbers.
(REGNO_OK_FOR_FP_P): Update register number.
(REGISTER_NAMES): Delete special entries for 1.0 fp registers.
(DBX_REGISTER_NUMBER): Likewise.

From-SVN: r7412