Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=56990
Ensure that the ide-eclipse build target downloads all the libraries required by the default Eclipse configuration files.
It is port of r1626779.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1627231 13f79535-47bb-0310-9956-ffa450edef68