C10c : Kelvin functions

S19AAF	Kelvin function $ber x$
S19ABF	Kelvin function $bei x$
S19ACF	Kelvin function $\ker x$
S19ADF	Kelvin function $kei x$
S19ANF	Kelvin function vectorized $ber x$
S19APF	Kelvin function vectorized $bei x$
S19AQF	Kelvin function vectorized $\ker x$
S19ARF	Kelvin function vectorized $kei x$