Merge branch 'u/danielw/DM-70-rebase1'
Replacing 'source' command with standard . (dot) command
BUGFIX : adding case where ~/.lsst/qserv.conf is a broken symlink
Merge branch 'u/fjammes/DM-1029'
disable building of testMySqlFs_1 -- it is obsolete anyway.
updated release notes
fix for partitioner to allow reading of files with binary 0/1
Merge branch 'u/salnikov/DM-664'
Port prototype mysql result handling and load data infile into qserv infra
Clean up preprocessor constants
Update wire proto for result plumbing.
Move Task.h from wcontrol to wbase.
Add trivial cout printer for WLogger.
Implement new worker query execution model (stub).
Test protobuf output for QueryAction
Connect QueryAction with Foreman. Build partial query squash/poision plumbing on the worker.
ChunkResource feature, ProtoRowBuffer, InfileMerger; split out intTypes and stringTypes
Trailing whitespace fixes
Implement new XrdSsiStream-based result transmission

Updating SendChannel interface for better error handling.
Updating InfileMerger to integrate with UserQuery.
Update protocol definition to handle default values more explicitly in schema.
Partially integrate InfileMerger with LocalInfile infrastructure.
Refactor LocalInfile to work with external RowBuffer objects.
result plumbing fixes. Remove old code. Switch MergeFixup to pass SelectStmt obj instead.
Working protobuf (schema+data) result plumbing for aggregation, empty results, area select.

Refactor InfileMerger; eliminate MergeFixup in favor of a more flexible
SelectStmt mergeStmt; remove sharing for proto-message objs in InfileMerger;
handle no-row results in ProtoRowBuffer.
Improve error handling when mysqld is down
Remove mysqldump-based code.