.travis.yml: name each builds [ci-skip]

Just cosmetic update.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65164 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

.travis.yml

@@ -52,16 +52,19 @@ addons:
 
 matrix:
   include:
-    - os: linux
+    - name: x86_64-linux --with-jemalloc
+      os: linux
       compiler: gcc
       env:
         - "CONFIG_FLAG='--with-gmp --with-jemalloc --with-valgrind'"
         - "JOBS=-j`nproc`"
-    - os: linux
+    - name: x86_64-linux
+      os: linux
       compiler: gcc-8
       env:
         - "JOBS=-j`nproc`"
-    - os: osx
+    - name: x86_64-darwin17
+      os: osx
       compiler: clang
       # We are not going to make rdoc here; that is to be done above.
       env:
@@ -75,17 +78,20 @@ matrix:
         - git -C $brew_core_dir checkout -q 25590710e3f7af9cfa173c5cd3eb41a0532107b6
         - HOMEBREW_NO_AUTO_UPDATE=1 brew upgrade openssl@1.1
         - /usr/local/opt/openssl@1.1/bin/openssl version
-    # - os: osx
+    # - name: uinversal.i386-darwin17
+    #   os: osx
     #   compiler: clang
     #   env:
     #     - "CONFIG_FLAG='--with-arch=i386 --disable-install-doc'"
     #     - "JOBS=\"-j`sysctl -n hw.activecpu`\""
-    # - os: osx
+    # - name: uinversal.x86_64h-darwin17
+    #   os: osx
     #   compiler: clang
     #   env:
     #     - "CONFIG_FLAG='--with-arch=x86_64h --disable-install-doc'"
     #     - "JOBS=\"-j`sysctl -n hw.activecpu`\""
-    - os: linux
+    - name: i686-linux
+      os: linux
       sudo: required
       compiler: "'gcc-8 -m32'"
       env: