CAY-1925 cayenne-crypto: add optional compression to the encryption pipeline

API to enable compression

git-svn-id: https://svn.apache.org/repos/asf/cayenne/main/trunk@1587083 13f79535-47bb-0310-9956-ffa450edef68
CAY-1925 cayenne-crypto: add optional compression to the encryption pipeline

actual compression code

git-svn-id: https://svn.apache.org/repos/asf/cayenne/main/trunk@1587084 13f79535-47bb-0310-9956-ffa450edef68
CAY-1925 cayenne-crypto: add optional compression to the encryption pipeline

decryptor

git-svn-id: https://svn.apache.org/repos/asf/cayenne/main/trunk@1587085 13f79535-47bb-0310-9956-ffa450edef68
CAY-1925 cayenne-crypto: add optional compression to the encryption pipeline

integration tests, fixing bugs

git-svn-id: https://svn.apache.org/repos/asf/cayenne/main/trunk@1587086 13f79535-47bb-0310-9956-ffa450edef68