Fixing macOS build (again!).

Change-Id: I973297704c45534590d98752f95dd50cb9b3f115
ORIGINAL_AUTHOR=Thai Duong <thaidn@google.com>
GitOrigin-RevId: 5ee0f0e6eb0cc1d66ad8a49265062f078f01cda6

kokoro/macos_external/continuous.cfg

@@ -3,3 +3,7 @@
 # Location of the continuous bash script in git
 # For now, just run the presubmit script.
 build_file: "tink/kokoro/macos_external/presubmit.sh"
+
+gfile_resources: "/x20/teams/ise-crypto/tink/kokoro/jdk-8u131-macosx-x64/jdk-8u131-macosx-x64.tgz"
+
+gfile_resources: "/x20/teams/ise-crypto/tink/kokoro/bazel-c6122b6ad35ebbed61036b0a2bcfea92b10adb8f-darwin-x86_64"

kokoro/macos_external/presubmit.sh

@@ -45,6 +45,9 @@ export PATH="${JAVA_HOME}/bin:$PATH"
 chmod -R a+rx "${JAVA_HOME}"
 popd
 
+# fixing https://stackoverflow.com/questions/36908041/git-could-not-expand-include-path-gitcinclude-fatal-bad-config-file-line
+sudo sed -i.bak s#~#/Users/kbuilder#g /usr/local/git/etc/gitconfig
+
 chmod +x "${BAZEL_BIN}"
 
 cd github/tink/