Update macOS dependencies, use Xcode 10.1

.travis.yml

@@ -37,9 +37,9 @@ addons:
     build_command: "make VERBOSE=1 -j3"
 matrix:
   include:
-    - name: OpenMW (all) on MacOS xcode9.4
+    - name: OpenMW (all) on macOS Xcode 10.1
       os: osx
-      osx_image: xcode9.4
+      osx_image: xcode10.1
       if: branch != coverity_scan
     - name: OpenMW (all) on Ubuntu Xenial GCC-5
       os: linux

CI/before_install.osx.sh

@@ -6,5 +6,5 @@ brew outdated cmake || brew upgrade cmake
 brew outdated pkgconfig || brew upgrade pkgconfig
 brew install qt
 
-curl -fSL -R -J https://downloads.openmw.org/osx/dependencies/openmw-deps-7cf2789.zip -o ~/openmw-deps.zip
+curl -fSL -R -J https://downloads.openmw.org/osx/dependencies/openmw-deps-55c27b1.zip -o ~/openmw-deps.zip
 unzip -o ~/openmw-deps.zip -d /private/tmp/openmw-deps > /dev/null

CI/before_script.osx.sh

@@ -11,7 +11,7 @@ cd build
 cmake \
 -D CMAKE_PREFIX_PATH="$DEPENDENCIES_ROOT;$QT_PATH" \
 -D CMAKE_OSX_DEPLOYMENT_TARGET="10.9" \
--D CMAKE_OSX_SYSROOT="macosx10.13" \
+-D CMAKE_OSX_SYSROOT="macosx10.14" \
 -D CMAKE_BUILD_TYPE=Release \
 -D OPENMW_OSX_DEPLOYMENT=TRUE \
 -D DESIRED_QT_VERSION=5 \