patch 7.4.739

Problem:    In a string "\U" only takes 4 digits, while after CTRL-V U eight
            digits can be used.
Solution:   Make "\U" also take eight digits. (Christian Brabandt)

src/eval.c

@@ -5745,8 +5745,10 @@ get_string_tv(arg, rettv, evaluate)
 
 			      if (c == 'X')
 				  n = 2;
-			      else
+			      else if (*p == 'u')
 				  n = 4;
+			      else
+				  n = 8;
 			      nr = 0;
 			      while (--n >= 0 && vim_isxdigit(p[1]))
 			      {

src/version.c

@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    739,
 /**/
     738,
 /**/