Changes included: 4 changes.

Change 4c7b6a592aa8773674ebf43340789a70af403248 by lukasz janyst <[log in to unmask]> (1 file): XrdCl: Make it possible for xrdcp to concatenate multiple sources to stdout

]==> xrdcp root://eospps.cern.ch//eos/ljanyst/testconcat/a048e67f-4397-4bb8-85eb-8d7e40d90763.dat root://eospps.cern.ch//eos/ljanyst/testconcat/b3d40b3f-1d15-4ad3-8cb5-a7516acb2bab.dat - | md5sum
Job: 1/2
Source: root://eospps.cern.ch:1094//eos/ljanyst/testconcat/a048e67f-4397-4bb8-85eb-8d7e40d90763.dat
Target: stdio://-
[1000MB/1000MB][100%][==================================================][90.91MB/s]
Job: 2/2
Source: root://eospps.cern.ch:1094//eos/ljanyst/testconcat/b3d40b3f-1d15-4ad3-8cb5-a7516acb2bab.dat
Target: stdio://-
[1000MB/1000MB][100%][==================================================][100MB/s]
2fcca11d452666b16fb46e29022dcccb -

]==> cat a048e67f-4397-4bb8-85eb-8d7e40d90763.dat b3d40b3f-1d15-4ad3-8cb5-a7516acb2bab.dat | md5sum
2fcca11d452666b16fb46e29022dcccb -

Change 5bbbf1e8a5948e33c210c71ea10a7cbbc114c23a by lukasz janyst <[log in to unmask]> (1 file): XrdClTests: Build versioned test monitoring plug-in

Change f9913f8df6f9eccf235b0a4a9917515795c0a443 by lukasz janyst <[log in to unmask]> (2 files): XrdCl: Load monitoring plug-ins using the plug-in loader

Change ea5d9a064142ea481712a9e3cebdae32afaaf52e by lukasz janyst <[log in to unmask]> (2 files): XrdCl: Make the plug-in manager use the new plugin loader