Support setting enumcs for CMYK and EYCC color space

[radarhere]

As per

openjpeg/src/lib/openjp2/jp2.c

Lines 2874 to 2884 in 70e6263

	if (jp2->enumcs == 16) {
	(*p_image)->color_space = OPJ_CLRSPC_SRGB;
	} else if (jp2->enumcs == 17) {
	(*p_image)->color_space = OPJ_CLRSPC_GRAY;
	} else if (jp2->enumcs == 18) {
	(*p_image)->color_space = OPJ_CLRSPC_SYCC;
	} else if (jp2->enumcs == 24) {
	(*p_image)->color_space = OPJ_CLRSPC_EYCC;
	} else if (jp2->enumcs == 12) {
	(*p_image)->color_space = OPJ_CLRSPC_CMYK;
	} else {

adds CMYK and EYCC to

openjpeg/src/lib/openjp2/jp2.c

Lines 1992 to 1998 in 70e6263

	if (image->color_space == 1) {
	jp2->enumcs = 16; /* sRGB as defined by IEC 61966-2-1 */
	} else if (image->color_space == 2) {
	jp2->enumcs = 17; /* greyscale */
	} else if (image->color_space == 3) {
	jp2->enumcs = 18; /* YUV */
	}

[rouault]

would you mind using the OPJ_CLRSPC_xxxx enumeration values (for those new entries as well as for the 3 above existing ones?)