Moves the ccache clang wrapper scripts to utils/travis/.

Also clears the ccache statistics after printing them. This means the hit/miss count will be shown per run, rather than cumulatively.

.travis.yml

@@ -70,18 +70,19 @@ install:
 script:
     - if [ "$TRAVIS_OS_NAME" = "osx" ]; then
           if [ "$TOOL" = "xcodebuild" ]; then
-              cd ./projectfiles/Xcode;
-
+              export PATH="/usr/local/opt/ccache/libexec:$PWD/utils/travis:$PATH";
               export CC=ccache-clang;
               export CXX=ccache-clang++;
-              export PATH="/usr/local/opt/ccache/libexec:$PWD:$PATH";
+
+              cd ./projectfiles/Xcode;
 
               export CCACHE_MAXSIZE=2G;
               export CCACHE_COMPILERCHECK=content;
 
               xcodebuild -project Wesnoth.xcodeproj -target Wesnoth;
 
               ccache -s;
+              ccache -z;
           else
               ln -s build-cache/ build;
               ./utils/travis/check_utf8.sh;

docker_run.sh

@@ -57,6 +57,8 @@ else
 
 # print ccache statistics
     ccache -s
+# clear ccache statistics, so only per run info is printed rather than cumulative
+    ccache -z
   else
     scons wesnoth wesnothd campaignd boost_unit_tests build=release ctool=$CC cxxtool=$CXX --debug=time extra_flags_config="-pipe" extra_flags_release="$EXTRA_FLAGS_RELEASE" strict="$STRICT" cxx_std=$CXXSTD nls=false jobs=2 enable_lto=false
   fi