Try to remote parent element during Debian build.

This patch will try to remove the <parent/> stuff from java/pom.xml
during the Debian package build.

Author: daniel@pocock.pro

git-svn-id: http://libphonenumber.googlecode.com/svn/trunk@697 ee073f10-1060-11df-b6a4-87a95322a99c
Add Main-Class for cpp-build tools JAR.

- Adds the manifest entries to the basic tools JAR.

- Creates a symlink named like the dependencies JAR that was used
  previously.

- Creates a symlink to the protobuf JAR.

In the manifest, the classpath reference to the protobuf JAR is a
relative filename. The second symbolic link satisfies that by linking to
the installed JAR.

This is only needed for people building packages

People who build normally with Maven will find that "mvn package" still
produces the original tools JAR which has its own Main-Class attribute

Author: daniel@pocock.pro

git-svn-id: http://libphonenumber.googlecode.com/svn/trunk@698 ee073f10-1060-11df-b6a4-87a95322a99c