Correct typos and formatting problems.

(cpu): Use sh_cpu_attr not sh_cpu.
(adddi3, subdi3, udivsi3-1, divsi3-1, mulsi3_call-1, ashrsi2_16,
ashrsi2_31, dect, casesi_worker): Use arith_reg_operand not
register_operand.
(ashlsi3_n, lshrsi3_n): Enable pattern.  Set length correctly.
Use '#' to output it.
(ashlsi3_n+1, lshrsi3_n+1): New patterns to split shifts.
(ashlsi3, lshrsi3): Use shiftby_operand instead of gen_shifty_op.
(lshlsi3_m): New pattern for single bit shifts.
(lshlsi3_k): Only handle multiple bit shifts.
(negc): Use IOR not PLUS to set carry bit.
(push+2, pop+2, movsi_pi, movdi-2, movdf_k-1, movsf_i-1): Delete.
(movsi_i, movqi_i, movhi_i): Delete redundant < and > constraints.
(movsf_i): Delete incorrect < and > constraints.

From-SVN: r9060