Merge pull request #3467 from thomasvl/bump_xcode_version

Xcode 8.3.x cleanups and use on travis

.travis.yml

@@ -8,7 +8,7 @@ language: cpp
 os:
   - osx
 # The Objective C build needs Xcode 7.0 or later.
-osx_image: xcode8.1
+osx_image: xcode8.3
 script:
   - ./tests.sh $CONFIG
 env:

objectivec/DevTools/full_mac_build.sh

@@ -276,9 +276,7 @@ if [[ "${DO_XCODE_IOS_TESTS}" == "yes" ]] ; then
     8.3* )
       XCODEBUILD_TEST_BASE_IOS+=(
           -destination "platform=iOS Simulator,name=iPhone 4s,OS=8.1" # 32bit
-          -destination "platform=iOS Simulator,name=iPhone 7,OS=10.3" # 64bit
+          -destination "platform=iOS Simulator,name=iPhone 7,OS=latest" # 64bit
-          -destination "platform=iOS Simulator,name=iPad 2,OS=8.1" # 32bit
-          -destination "platform=iOS Simulator,name=iPad Pro (9.7 inch),OS=10.3" # 64bit
       )
       ;;
     * )