merge p4 fstat requests for all incoming changes (IDEA-99185)
inline with flatten array creation: do not loose leading comment (IDEA-112161)
take into account containing class type params when accepting assignability (IDEA-71582)
provide common quickfixes for ambiguous constructor calls (IDEA-115255)
better empty text positioning
 don't select 2nd element if no files are opened
platform: file permissions copying for not owned files fixed
Cleanup (distinct logging)