Shift 3.4 released

CHANGES
- Added support for GNU long names/links during tar creation
- Added inclusion/exclusion of file names based on regular expressions
- Added --io[rw] and --net[rw] options to throttle by read/write only
- Added global throttling to throttle read/writes/both by fs/host/user
- Added --sync-fast to synchronize files without verifying integrity
- Added built-in metadata sync mechanism for improved scalability
- Added estimated time until completion in status
- Added ability to specify some transport options in manager config
- Added background spawn of dmget/dmput to avoid intermittent hangs
- Changed disk throttling based on high/low threshold for suspend/resume
- Fixed inadvertent tar file renaming when transfer completes with errors
- Fixed error parsing of mcp/msum based on coreutils 8.x
- Fixed table of contents truncation during remote tar creation