Simplify/minimize the target platform

This uses Oomph's latest improved target platform generator support.

Also ensure that the p2 update site is complete with regard to all of
BIRT's dependencies.

build/org.eclipse.birt.p2updatesite/birtdesigner.product

@@ -8,7 +8,7 @@
 
    <launcherArgs>
       <programArgs>-product
-org.eclipse.epp.package.reporting.product
+org.eclipse.birt.designer
 --launcher.defaultAction
 openFile
 -showsplash

build/org.eclipse.birt.p2updatesite/pom.xml

@@ -41,7 +41,7 @@
 				<artifactId>tycho-p2-repository-plugin</artifactId>
 				<version>${tycho.version}</version>
 				<configuration>
-					<includeAllDependencies>false</includeAllDependencies>
+					<includeAllDependencies>true</includeAllDependencies>
 				</configuration>
 			</plugin>
 

build/org.eclipse.birt.releng/BIRT.setup

@@ -396,7 +396,7 @@
         </detail>
         <detail
             key="singleLocation">
-          <value>false</value>
+          <value>true</value>
         </detail>
         <detail
             key="sortLocations">
@@ -412,7 +412,7 @@
         </detail>
         <detail
             key="ignoreJavaRequirements">
-          <value>false</value>
+          <value>true</value>
         </detail>
         <detail
             key="generateVersions">
@@ -424,6 +424,10 @@
         </detail>
         <detail
             key="generateImplicitUnits">
+          <value>false</value>
+        </detail>
+        <detail
+            key="ignorePropertiesMatchRequirements">
           <value>true</value>
         </detail>
       </annotation>
@@ -462,13 +466,6 @@
   </setupTask>
   <stream name="master"
       label="Workspace setup for branch master">
-    <setupTask
-        xsi:type="setup:EclipseIniTask"
-        option="-Doomph.redirection.birt.old"
-        value="=https://raw.githubusercontent.com/eclipse/birt/master/build/org.eclipse.birt.releng/BIRT.setup->${git.clone.birt.location|uri}/build/org.eclipse.birt.releng/BIRT.setup"
-        vm="true">
-      <description>Set an Oomph redirection system property to redirect the logical location of this setup to its physical location in the Git clone.</description>
-    </setupTask>
     <setupTask
         xsi:type="setup:EclipseIniTask"
         option="-Doomph.redirection.birt"