refactored NFS-safe locking and other portability stuff into new Util.pm file; now allows high-8-bit chars in paths to be de-tainted correctly; some other portability cleanups
refactored NFS-safe locking and other portability stuff into new Util.pm file; now allows high-8-bit chars in paths to be de-tainted correctly; some other portability cleanups


git-svn-id: d99324e817494df82bb0080d8e7ab74680731a10@4045 13f79535-47bb-0310-9956-ffa450edef68

apache/spamassassin,apache/spamassassin,apache/spamassassin,apache/spamassassin,apache/spamassassin