Update go script to work on Mac

go

@@ -1,14 +1,23 @@
 #!/bin/sh
-SCRIPT=`readlink -f $0`
+readlinkf() {
+    python -c 'import os,sys;print os.path.realpath(sys.argv[1])' $1
+}
+SCRIPT=`readlinkf $0`
 PROJECT_ROOT=`dirname $SCRIPT`
 # Force Python processes to be unbuffered. Avoids jumbled output
 # during CI builds caused by buffering of stdout.
 export PYTHONUNBUFFERED=x
 if [ -z "$OHDEVTOOLS_ROOT" ]; then
-  export OHDEVTOOLS_ROOT=`readlink -f $PROJECT_ROOT/ohdevtools`
+  export OHDEVTOOLS_ROOT=`readlinkf $PROJECT_ROOT/ohdevtools`
 fi
 if [ ! -e "$OHDEVTOOLS_ROOT" ]; then
-  export OHDEVTOOLS_ROOT=`readlink -f $PROJECT_ROOT/../ohdevtools`
+  export OHDEVTOOLS_ROOT=`readlinkf $PROJECT_ROOT/ohDevTools`
+fi
+if [ ! -e "$OHDEVTOOLS_ROOT" ]; then
+  export OHDEVTOOLS_ROOT=`readlinkf $PROJECT_ROOT/../ohdevtools`
+fi
+if [ ! -e "$OHDEVTOOLS_ROOT" ]; then
+  export OHDEVTOOLS_ROOT=`readlinkf $PROJECT_ROOT/../ohDevTools`
 fi
 if [ ! -e "$OHDEVTOOLS_ROOT" ]; then
   echo OHDEVTOOLS_ROOT not set.