Bug#820999: libicu4j-4.2-java: Missing conflicts/replaces on libicu4j-java

[Lee Garrett]

Package: libicu4j-4.2-java
Version: 4.2.1.1-4
Severity: serious
Justification: Policy 7.6.1

Dear maintainer,

installing this package with libicu4j-java still present causes dpkg to bail 
because it's trying to overwrite the other packages's files. See the log below:

Performing actions...
Retrieving bug reports... Done
Parsing Found/Fixed information... Done
(Reading database ... 452097 files and directories currently installed.)
Preparing to unpack .../libicu4j-4.2-java_4.2.1.1-4_all.deb ...
Unpacking libicu4j-4.2-java (4.2.1.1-4) ...
dpkg: error processing archive /var/cache/apt/archives/libicu4j-4.2-java_4.2.1.1-4_all.deb (--unpack):
 trying to overwrite '/usr/share/maven-repo/com/ibm/icu/icu4j/4.2.1.1/icu4j-4.2.1.1.pom', which is also in package libicu4j-java 4.2.1.1-3
Errors were encountered while processing:
 /var/cache/apt/archives/libicu4j-4.2-java_4.2.1.1-4_all.deb
needrestart is being skipped since dpkg has failed
E: Sub-process /usr/bin/dpkg returned an error code (1)
Failed to perform requested operation on package.  Trying to recover:
Press Return to continue.

Kind regards,
Lee Garrett

-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (500, 'testing'), (101, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.4.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)