Full build instructions (finally...)

git-svn-id: https://svn.apache.org/repos/asf/syncope/branches/1_1_X@1545183 13f79535-47bb-0310-9956-ffa450edef68
[SYNCOPE-448] Merge from 1_1_X

git-svn-id: https://svn.apache.org/repos/asf/syncope/trunk@1545187 13f79535-47bb-0310-9956-ffa450edef68