SecurityException thrown when passing a relative path name when backing up 
database
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         Key: DERBY-709
         URL: http://issues.apache.org/jira/browse/DERBY-709
     Project: Derby
        Type: Bug
  Components: Store, Security  
    Versions: 10.0.2.0, 10.1.1.0, 10.2.0.0    
    Reporter: Daniel John Debrunner
    Priority: Minor


CALL SYSCS_UTIL.SYSCS_BACKUP_DATABASE('extinout/bkup1');
ERROR 38000: The exception 'java.security.AccessControlException: access denied
(java.util.PropertyPermission user.dir read)' was thrown while evaluating an exp
ression)

Can be seen in the store/encryptionKey.sql test, modify the _app.properties 
file to enable the security manager.

Due to logging messages using File.getCanonicalPath in RawStore.java, lines 675 
and 686.

Possible solutions:
  - use a privileged block and required user.dir permission granted to user.dir 
to backup to a relative directory
  - use a privileged block,if a security exception is thrown then just display 
the relative name, otherwise display the full name. This would allow backups to 
succeed without requiring granting additional permissions to derby.jar
  - just log the relative path

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