[MOB-419] EAS Iphone invite response fix

Bump ZAL version to 2.38.0

Bump zal version

Changed version to 2.15.1.

Fixed compatibility check with previous version, which was inverted: added classes/method were reported as removed.

Changed version to 2.10.1

Changed versiont to 2.10.0, fixed compatibility ABI with X build type

[MOB-94]

 - Convert the Zimbra's Invite Rsvp in a primitive type

Added Copyright in debian packages, fixed zimbra version dependency, …

…updated readme.