* common-src/ammessage.c : Print severity as name.
* perl/Amanda/Message.pm: severity constant are name.
* installcheck/Amanda_Rest_Amcheck.pl,
   installcheck/Amanda_Rest_Changers.pl,
   installcheck/Amanda_Rest_Configs.pl,
   installcheck/Amanda_Rest_Dles.pl,
   installcheck/Amanda_Rest_Dumps.pl,
   installcheck/Amanda_Rest_Labels.pl,
   installcheck/Amanda_Rest_Runs.pl,
   installcheck/Amanda_Rest_Storages.pl,
   installcheck/Amanda_Rest_Storages_Labels.pl,
   installcheck/Amanda_Rest_Version.pl: Use symbol for the severity.


git-svn-id: https://svn.code.sf.net/p/amanda/code/amanda/trunk@5922 a8d146d6-cc15-0410-8900-af154a0219e0