[git] registry option git.file.history.full that controls file history options: it adds "--full-history --simplify-merges" IDEA-153831

don't close the tag for cases with unclosed attributes

This reverts commit 85eeec1a.

Some checks may be heavy, but required to debug hard-to-find bugs. You may run code with out them, and enable em with   ``_PYCHARM_VERBOSE_MODE``

Updated all IDEs launcher's properties.

make getNode amortized O(1) for stub-based PSI to make it work in decent time even with 100 nested if statements

Updated all IDEs launcher's properties.