hs_err file is a starting point for JVM crash analysis. A lot can happen to the hs_err file on its way from the JVM to someone analyzing the crash - it can be altered by the user, or their organization, or by logging systems. Alterations can happen intentionally, for example, to preserve privacy, or unintentionally by tools. Sometimes alterations are visible, sometimes it might not be evident that the hs_err file has been altered.

It would be useful to have a way to check whether a hs_err log file has been tampered with after being printed from the JVM.

Requirements:
* the checksum should be embedded in hs_err file (e.g. as the last line hs_err file)
* Preferably, the checking should tolerate "line ending" changes and other non-relevant modifications.