Add function definitions for shift_instr,

Add function definitions for shift_instr,

output_mov_long_double_fpu_from_arm,
output_mov_long_double_arm_from_fpu, and
output_mov_long_double_arm_from_arm.
(FLOAT_WORDS_BIG_ENDIAN): Define to 1.
(SECONDARY_OUTPUT_RELOAD_CLASS): return GENERAL_REGS for HImode outputs.
(ASM_OUTPUT_LONG_DOUBLE, ASM_OUTPUT_DOUBLE, ASM_OUTPUT_FLOAT): output
floating point constants as hex, make order correct given definition
of FLOAT_WORDS_BIG_ENDIAN.
(PRINT_OPERAND): Delete redundant code when handling CONST_DOUBLE.

From-SVN: r5809