QPID-5604: Added the Cygwin patch to QpidRestAPI.sh initially to see if it works - it doesn't break on Linux, but I can't test Cygwin myself

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1575537 13f79535-47bb-0310-9956-ffa450edef68