[SRU] Tomcat6 fails to upgrade if JAVA_OPTS contains /

IMPACT:
This bug will impact tomcat6 installs upgrading to Maverick and updates in Maverick itself; its fixed in Natty.

Using the '/' character in JAVA_OPTS is quite common - its normally used to specify the filesystem location for additional application files such as those for Hudson:

 -Dhudson.home=/home/hudson

Updates/upgrades using this type of option will fail.

FIX:
tomcat6.postinst uses sed to parse various debconf answers into a template which is used to generate /etc/default/tomcat6; this currently uses '/' as the pattern delimiter - the fix switches this to '%' which is unlikely to be used in JAVA_OPTS.

PATCH:
See linked branch

TEST CASE 1:
sudo apt-get install tomcat6
sudo dpkg-reconfigure tomcat6
 Accept all default for user and group
 Add an additional parameter to JAVA_OPTS - "-Dtest.dir=/var/log/nonsense"

Reconfiguration will fail with "sed: -e expression #1, char 44: unknown option to `s'"

TEST CASE 2:
sudo apt-get install tomcat6
sudo vi /etc/default/tomcat6
 Add an additional parameter to JAVA_OPTS - "-Dtest.dir=/var/log/nonsense"
sudo dpkg-reconfigure tomcat6
 Accept all default values

Reconfiguration will fail with "sed: -e expression #1, char 44: unknown option to `s'"

IMPACT:
Minor change to maintainer script; already in development release so limited regression potential.

>>> Original bug report <<<

Binary package hint: tomcat6

tomcat upgrade fails with the following error:

"sed: -e expression #1, char 44: unknown option to `s'"

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: tomcat6 6.0.28-2ubuntu1
ProcVersionSignature: Ubuntu 2.6.35-22.33-server 2.6.35.4
Uname: Linux 2.6.35-22-server x86_64
Architecture: amd64
Date: Mon Oct 4 15:51:21 2010
InstallationMedia: Ubuntu-Server 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.2)
PackageArchitecture: all
ProcEnviron:
 LANG=en_GB.utf8
 SHELL=/bin/bash
SourcePackage: tomcat6