patch 8.2.1439: tiny and small builds have no test coverage

Problem:    Tiny and small builds have no test coverage.
Solution:   Restore tests that do not depend on the +eval feature.
            (Ken Takata, closes #6696)
diff --git a/.travis.yml b/.travis.yml
index a4c6287..a8acd3a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,11 +7,11 @@
 _anchors:
   envs:
     - &tiny-nogui
-      FEATURES=tiny CONFOPT="--disable-gui"
+      FEATURES=tiny TEST=testtiny CONFOPT="--disable-gui"
     - &tiny
-      FEATURES=tiny
+      FEATURES=tiny TEST=testtiny
     - &small
-      FEATURES=small
+      FEATURES=small TEST=testtiny
     - &normal
       FEATURES=normal
     - &linux-huge