patch 7.4.911

Problem:    t_Ce and t_Cs are documented but not supported. (Hirohito Higashi)
Solution:   Define the options.

src/option.c

@@ -2981,8 +2981,10 @@ static struct vimoption
     p_term("t_ce", T_CE)
     p_term("t_cl", T_CL)
     p_term("t_cm", T_CM)
+    p_term("t_Ce", T_UCE)
     p_term("t_Co", T_CCO)
     p_term("t_CS", T_CCS)
+    p_term("t_Cs", T_UCS)
     p_term("t_cs", T_CS)
 #ifdef FEAT_VERTSPLIT
     p_term("t_CV", T_CSV)

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    911,
 /**/
     910,
 /**/