Fix https://issues.apache.org/bugzilla/show_bug.cgi?id=56988
Allow to use relative paths in base.path setting when building Tomcat, e.g. "base.path=../libraries"
Use consistent naming for "inheritAll" property: Ant manual uses camelCase for that name.
It is port of r1625599 from tomcat/trunk.

git-svn-id: https://svn.apache.org/repos/asf/tomcat/tc7.0.x/trunk@1625606 13f79535-47bb-0310-9956-ffa450edef68