file copying with NIO with fallback to FileUtil extracted to a utility method; Updated MavenResourcesBuilder (followup IDEA-CR-39342)

because resolve might be expensive, and sometimes lead to SOE if it requests the same lazily calculated reference list on the same class

The line breaks of Xml comments at the end of an XML file were
not preserved when the file was reformatted.

Change-Id: If8ebc954f4cdc8f0f3e385e2474ff50466ce88ff

getAllMethods has a different meaning in other places

EA-125378

added support for exact file name matchers

suggest to create class with lower case first letter if ref is located in type element/ref list (IDEA-201744)

added support for exact file name matchers

another way to make primary caret offset available lock-free in background (to speedup ShowIntentionPass.availableFor)

without making setCaretsAndSelections/removeSecondaryCarets slower