IDEA-24742 When execution point is highlighted using border style instead of color, an extra line is... - fix after review
copyright plugin: don't hold psiFile in invokeLater runnable preventing it to be gc-ed in tests
index consistency fixes

* use last committed document stamp for unsaved/uncommitted documents
* during psi commit, return psi mod stamp and not the document's one
* during multi-tree psi commit, indices should use the main tree's AST content and not the semi-updated parallel trees
* consider documents committed after changes in absence of PSI
use less memory for storing parent commits in GraphCommitImpl
run gdsl scripts concurrently