keep only those macros compiled that really need to
TNetXNGFile: Make it possible to disable querying for readv limits

(cherry picked from commit e71da30898eba2fbe0bab580d33332f5976343e4)

Conflicts:
	net/netxng/inc/TNetXNGFile.h
TNetXNGFile: Workaround problem with dCache returning nonsense readv parameters

(cherry picked from commit efe4de5aa3873198822112710baaf60eb0db55cf)
TNetXNGFile: Make sure to handle echoed responses to readv_ior_max and readv_iov_max

(cherry picked from commit 999a0cffd866936fbbfe740314208ad21f13d066)
TNetXNGFile: when readv_iov_max is wrong assume that readv_ior_max is wrong too

(cherry picked from commit 85078fd6f0afe9f440c80a9897bd1922e049a203)
New example showing how to remove and add a stat line in a stat box.
Disable DESTDIR when moving the headers in the build area (fixes ROOT-6803)
Doc improvements
Apply fixes suggested here: http://root.cern.ch/phpBB3/viewtopic.php?f=10&t=18743
The new tutorial returns a non-zero return code.
Doc update.
Make NetXNG.QueryReadVParams settable by $ROOT_XRD_QUERY_READV_PARAMS.

(cherry picked from commit 9e8ffe2f428adc2f77ceb24cca224b63e88a5dd8)
Force re-compilation of all ACliC tutorials to avoid problems.
Fix for ROOT-6764 (Build failure with gnuinstall=ON)
Update ROOT version files to v5.34/22.
Fix thread local declaration
Fix thread local declaration
The character position was not correct with the Cocoa backend.
  (see https://sft.its.cern.ch/jira/browse/ROOT-6561)
Handle the case ROOT was built with configure/make to run the tutorials
Expect the hsimple.root in the current directory