* common-src/bsd-security.c, common-src/bsdtcp-security.c,
  common-src/bsdudp-security.c, common-src/krb5-security.c:
  Remove "\n" in security_seterror error message.
* server-src/amanda-rest-server.pl: Improve error detection.


git-svn-id: https://svn.code.sf.net/p/amanda/code/amanda/trunk@5833 a8d146d6-cc15-0410-8900-af154a0219e0