Reverted accidental change: mps_module_xml elements were stripped from libraries' xml files. They became ordinary idea libraries and stubs were built from their class files, which is wrong because they really point to modules.
Shoud fix blinking test RebuildIdeaPlugin. Reverted wrong out-commenting of the code that filters out non-module-level dependencies when deciding for what to build class stubs in module in jps. Without for every module stubs were built for all project libs, and sdk.
Libraries' xml files: idea re-sorted elements