new in 13, because these inspections were not actually integrated into 12.1
avoid garbage creation in JDK7 due to calling StringBuilder.toString() that copies buffer now
avoid calling PsiFileImpl.toString, use charsequence from FileViewProvider
tests: jdk6.0 under mac is weird
more correct test
cleanup: dereference
javadoc
diag for EA-51788 - assert: FileEditorManagerImpl.openFileImpl
diag for EA-51660 - IAE: SuppressManagerImpl.createSuppressActions