Workaround for ROOT/Cling problem with Boost small_vector

Extends the workaround introduced in 25e5092d to work with Boost 1.72.

see #75 (closed)

added Core ~22896 ~22893 workaround labels

added lhcb-head label

assigned to @rmatev

mentioned in merge request !2389 (merged)

• [2020-02-16 00:04] Validation started with lhcb-lcg-dev3#1178
• [2020-02-16 00:04] Validation started with lhcb-lcg-dev4#1190
• [2020-02-16 00:05] Validation started with lhcb-head#2512

merged

mentioned in commit ee329658

removed lhcb-head ~22896 ~22893 labels

unassigned @rmatev

mentioned in merge request !2454 (merged)