Added an INFO message about the number of sources
Added an INFO message about the number of sources


Former-commit-id: 3f9f79b0756360c6f3056cf7cd5ee00da663accb [formerly 3f9f79b0756360c6f3056cf7cd5ee00da663accb [formerly 03a059b2a019ade6b6ed270f5896543283e5c34e]]
Former-commit-id: f7367751ec3550f0025c5c75736a7847a5a9c567
Former-commit-id: f5b39c08a5d79fb620b296a5bd5716b40219008e
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine