fix dispatcher to not parse the params twice, still supports request_params
fix dispatcher to not parse the params twice, still supports request_params

benburkert/merb-core,merb/merb,wycats/merb,wycats/merb,merb/merb,wycats/merb,wycats/merb,wycats/merb,benburkert/merb-core,merb/merb