jemalloc: bump to 3.5.0

Signed-off-by: David Abdurachmanov <David.Abdurachmanov@cern.ch>
Move to root / roofit 5.34.17, including IO patches from Chris.
Include latest changes from Chris.
Rever arm changes.

We need to properly ifdef out the arm Fix.
Move to new version which works with root5.34.17++
Add threadsafety bits for boost-spirit.
Fix root deadlock.

See also cms-sw/root#7.
Merge pull request #570 from ktf/root-5-34-17

Move to root 5.34.17