fix Request#raw_post to respect bodies with no rewind method
fix Request#raw_post to respect bodies with no rewind method

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