Add longoptions support for gmtvector. (#8069)

Co-authored-by: Paul Wessel <[email protected]>

src/longopt/gmtvector_inc.h

@@ -25,28 +25,19 @@ static struct GMT_KEYWORD_DICTIONARY module_kw[] = {
 		  short_directives,    long_directives,
 		  short_modifiers,     long_modifiers,
 		  transproc_mask */
-	{ 0, 'A', "",
-	          "",                  "",
-	          "",                  "",
-		  GMT_TP_STANDARD },
-	{ 0, 'C', "",
-	          "",                  "",
-	          "",                  "",
-		  GMT_TP_STANDARD },
-	{ 0, 'E', "",
-	          "",                  "",
-	          "",                  "",
-		  GMT_TP_STANDARD },
-	{ 0, 'N', "",
-	          "",                  "",
+	{ 0, 'A', "primary_vector|primary_vec",
+	          "m",                 "mean",
 	          "",                  "",
 		  GMT_TP_STANDARD },
-	{ 0, 'S', "",
-	          "",                  "",
+	{ 0, 'C', "cartesian",
+	          "i,o",               "in,out",
 	          "",                  "",
 		  GMT_TP_STANDARD },
-	{ 0, 'T', "",
-	          "",                  "",
+	{ 0, 'E', "geod2geoc",         "", "", "", "", GMT_TP_STANDARD },
+	{ 0, 'N', "normalize",         "", "", "", "", GMT_TP_STANDARD },
+	{ 0, 'S', "secondary_vector|secondary_vec", "", "", "", "", GMT_TP_STANDARD },
+	{ 0, 'T', "transform",
+	          "a,b,d,D,p,s,r,R,t,x", "average,bisector,dotproduct,angle,gcircle,sum,rotate,rotate2,translate,crossproduct",
 	          "",                  "",
 		  GMT_TP_STANDARD },
 	{ 0, '\0', "", "", "", "", "", 0 }  /* End of list marked with empty option and strings */