Index: .travis.yml
===================================================================
diff -u -N -rf7b03ccc6b3ae72ad57964ea90b32a07ee653647 -r3b557e7591d91d3afd7c510ede6b4d638d16bb86
--- .travis.yml	(.../.travis.yml)	(revision f7b03ccc6b3ae72ad57964ea90b32a07ee653647)
+++ .travis.yml	(.../.travis.yml)	(revision 3b557e7591d91d3afd7c510ede6b4d638d16bb86)
@@ -7,20 +7,22 @@
 # - gcc
 # - clang
 env:
-  matrix:
-  - TCLTAG=core-8-6-branch
-  - TCLTAG=core-8-6-9
-  - TCLTAG=core-8-5-branch
-  - TCLTAG=core-8-5-19
-  - TCLTAG=core-8-7-a1
-  - TCLTAG=core-8-branch
+#  matrix:
+#  - TCLTAG=core-8-6-branch
+#  - TCLTAG=core-8-6-9
+#  - TCLTAG=core-8-5-branch
+#  - TCLTAG=core-8-5-19
+#  - TCLTAG=core-8-7-a1
+#  - TCLTAG=core-8-branch
   global:
   - KITS=$HOME/kits
 matrix:
   include:
     - os: linux
       dist: xenial
-      compiler: clang-7.0
+      compiler: clang
+      env:
+        - TCLTAG=core-8-6-branch
     - os: linux
       dist: xenial
       compiler: gcc-7
@@ -30,11 +32,18 @@
             - ubuntu-toolchain-r-test
           packages:
             - g++-7
+      env:
+        - TCLTAG=core-8-6-branch
     - os: osx
       osx_image: xcode10.2
       compiler: clang
+      env:
+        - TCLTAG=core-8-6-branch
     - os: osx
-      compiler: gcc-4.9
+      osx_image: xcode10.2	
+      compiler: gcc-7.0
+      env:
+        - TCLTAG=core-8-6-branch
   allow_failures:
   - env: TCLTAG=core-8-6-branch
   - env: TCLTAG=core-8-5-branch
@@ -44,6 +53,7 @@
   directories:
   - "$KITS"
 before_install:
+- if [ $TRAVIS_OS_NAME = osx ]; then brew install gcc; fi
 - openssl aes-256-cbc -K $encrypted_8d1065ce6623_key -iv $encrypted_8d1065ce6623_iv -in deploy_key.enc -out ./deploy_key -d
 - chmod 600 ./deploy_key
 - if echo "$TRAVIS_COMMIT_MESSAGE" | grep -F -q "[skip travis]" ; then echo "[skip