Update h2 to version 1.4.200 to be able to use MVStore #882
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…erlying store for H2 DB
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Description
This PR migrate NGB 2.6.1 to H2 database version
1.4.200.Intention for this is to use MVStore as more reliable and fast (MVCC is used by default in
1.4.200). And version1.4.200of H2 has MVStore as a stable feature.This PR also includes fixes for some of the DB migration scripts, so manual changes is required to be made if you migrate with existing DB. Moreover to be able to benefit from new
MVStoreyou will need to perform conversion for your existing H2 DB fromPageStoretoMVStore.P.S. Also this PR contains small pmd/checkstyle fixes.