Refactor getBuiltInMacros() to be SBSv1 specific. This are the hard-coded macros misc macros we are adding for SBSv1.
For SBSv2, they are retrieved from the sbs config query. Also, clean up some API and comments on public APIS
<?xml version="1.0" encoding="UTF-8"?>
<scr:component xmlns:scr="http://www.osgi.org/xmlns/scr/v1.1.0" immediate="true" name="com.nokia.carbide.cpp">
<implementation class="com.nokia.carbide.cpp.p2.CarbideP2Policy"/>
<service>
<provide interface="org.eclipse.equinox.p2.ui.Policy"/>
</service>
<property name="service.ranking" type="Integer" value="100"/>
</scr:component>