Split 'lib/' into commit '57197948e78722854abded5a20f9fb788e326688'

git-subtree-dir: lib
git-subtree-mainline: 491b83b1c30350479c611da02ec9150a5a724872
git-subtree-split: 57197948e78722854abded5a20f9fb788e326688
Merge branch 'master' of https://github.com/SystemAnalysisDpt-CMC-MSU/ellipsoids into ellmaster