patch 8.0.0187: cant build with new Ruby version

Problem:    Building with a new Ruby version fails.
Solution:   Use ruby_sysinit() instead of NtInitialize(). (Tomas Volf,
            closes #1382)

src/if_ruby.c

@@ -862,7 +862,11 @@ static int ensure_ruby_initialized(void)
 	    int argc = 1;
 	    char *argv[] = {"gvim.exe"};
 	    char **argvp = argv;
+# ifdef RUBY19_OR_LATER
+	    ruby_sysinit(&argc, &argvp);
+# else
 	    NtInitialize(&argc, &argvp);
+# endif
 #endif
 	    {
 #if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)

src/version.c

@@ -764,6 +764,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    187,
 /**/
     186,
 /**/