Add rational kwarg for Mul.as_coeff_mul, like for as_coeff_Mul
add -oo processing to as_coeff_mul
Merge pull request #23 from smichr/ppfix

add -oo processing to as_coeff_mul
add kwargs to other as_coeff_mul routines and process -Number
Merge pull request #25 from smichr/ppfix

Ppfix
Merge pull request #8415 from skirpichev/ppfix2

Add rational kwarg for Mul.as_coeff_mul, like for as_coeff_Mul