patch 8.0.1630: trimming white space is not that easy

Problem:    Trimming white space is not that easy.
Solution:   Add the trim() function. (Bukn, closes #1280)
diff --git a/src/version.c b/src/version.c
index ce1ed20..84f2a3e 100644
--- a/src/version.c
+++ b/src/version.c
@@ -767,6 +767,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1630,
+/**/
     1629,
 /**/
     1628,