New MailScanner Script v3.00

Changes:

• NEW: New major Mailscanner v5.0.2 Release:
  https://github.com/MailScanner/v5/blob/master/changelog
• Complete rework of all perl scripts to cater for MailScanner v5 and use of Clamavconnector in MSFE. Initiated improved coding standards in all scripts
• Modified msinstall.sh to no longer require input
• Added new SpamAssassin mailscanner.pre to ensure all SA plugins are loaded in case of missing official SA pre files
• Remove various unnecessary service restarts
• Patch to v5 MailScanner/Log.pm to fix system logger issue