patch 8.2.1279: some tests on Travis have EXITFREE duplicated

Problem:    Some tests on Travis have EXITFREE duplicated.
Solution:   Remove EXITFREE from shadowopt.  Add "shadow" to job name.
diff --git a/src/version.c b/src/version.c
index 1e78c01..79d24e9 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1279,
+/**/
     1278,
 /**/
     1277,