Merge branch 'master' into dev-controldir

debian/control

debian/nordugrid-arc-arex.prerm

debian/rules

nordugrid-arc.spec.in

po/ru.po

release_notes/release_notes_6.4.0

src/clients/compute/utils.h

src/clients/credentials/arcproxy.1.in

src/clients/credentials/arcproxy.cpp

src/clients/credentials/arcproxy_proxy.cpp

src/doc/arc.conf.DELETED

src/doc/arc.conf.reference

src/hed/acc/EMIES/EMIESClient.h

src/hed/acc/GRIDFTPJOB/FTPControl.h

src/hed/daemon/unix/daemon.h

src/hed/daemon/unix/main_unix.cpp

src/hed/dmc/gfal/DataPointGFALDelegate.cpp

src/hed/dmc/gfal/DataPointGFALDelegate.h

src/hed/dmc/gfal/Makefile.am

src/hed/dmc/gridftp/DataPointGridFTPHelper.h