REF: ensure name and cname are always str (#29692)
REF: ensure name and cname are always str (#29692)


gfyoung/pandas,TomAugspurger/pandas,dsm054/pandas,jreback/pandas,TomAugspurger/pandas,jreback/pandas,rs2/pandas,dsm054/pandas,pandas-dev/pandas,datapythonista/pandas,rs2/pandas,gfyoung/pandas,jreback/pandas,pandas-dev/pandas,gfyoung/pandas,rs2/pandas,TomAugspurger/pandas,jorisvandenbossche/pandas,jreback/pandas,rs2/pandas,dsm054/pandas,pandas-dev/pandas,datapythonista/pandas,dsm054/pandas,jorisvandenbossche/pandas,jorisvandenbossche/pandas,TomAugspurger/pandas,datapythonista/pandas,gfyoung/pandas,dsm054/pandas,gfyoung/pandas,datapythonista/pandas,jorisvandenbossche/pandas,pandas-dev/pandas,jreback/pandas