FELIX 3903 - Move the API project to runtime:

Added api and api-it modules to the runtime's reactor

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1455544 13f79535-47bb-0310-9956-ffa450edef68
Simplify factory classloaders.

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1455545 13f79535-47bb-0310-9956-ffa450edef68