output_func_{prologue,epilogue}): Change declarations from
output_{prologue,epilogue}.
(arm_output_llc, arithmetic_instr, output_arithmetic_with_immediate_mulitply,
 output_arithmetic_with_shift, shift_instr): Delete function definition.
(ASM_OUTPUT_OPCODE): Delete.
(PRINT_OPERAND): Call arm_print_operand, instead of doing it directly.
(ARM_COMMENT_CHAR): New macro.
(ARM_REG_PREFIX): New macro.
(ARM_SIGN_EXTEND): New macro.
(PRINT_OPERAND_ADDRESS): Delete variable 'shift'.  Change type of
variable 'offset' to HOST_WIDE_INT.  Use arm_print_operand to handle
shifts in addresses.

From-SVN: r7426