Update build configuration for RAP Tools 3.9.0 RC2

- Use Eclipse Platform build S-4.12RC2-201906051800

Change-Id: I7a2ce6e9414b5ca38237989eef422482b877fb9b
Signed-off-by: Markus Knauer <mknauer@eclipsesource.com>
diff --git a/features/org.eclipse.rap.tools.feature/.forceQualifierUpdate b/features/org.eclipse.rap.tools.feature/.forceQualifierUpdate
index 218e5ea..96b9470 100644
--- a/features/org.eclipse.rap.tools.feature/.forceQualifierUpdate
+++ b/features/org.eclipse.rap.tools.feature/.forceQualifierUpdate
@@ -1 +1 @@
-20190605-1200
+20190612-1800
diff --git a/releng/org.eclipse.rap.tools.build/target.definition/org.eclipse.rap.tools.target.definition.target b/releng/org.eclipse.rap.tools.build/target.definition/org.eclipse.rap.tools.target.definition.target
index 316f41b..0351344 100644
--- a/releng/org.eclipse.rap.tools.build/target.definition/org.eclipse.rap.tools.target.definition.target
+++ b/releng/org.eclipse.rap.tools.build/target.definition/org.eclipse.rap.tools.target.definition.target
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<?pde version="3.8"?><target name="RAP Tools target platform" sequenceNumber="47">
+<?pde version="3.8"?><target name="RAP Tools target platform" sequenceNumber="48">
 <locations>
 <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="slicer" includeSource="true" type="InstallableUnit">
 <unit id="org.eclipse.jetty.bundles.f.feature.group" version="9.4.18.v20190429"/>
@@ -7,26 +7,26 @@
 </location>
 <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="slicer" includeSource="true" type="InstallableUnit">
 <unit id="org.eclipse.core.runtime.feature.feature.group" version="1.2.500.v20190518-1240"/>
-<unit id="org.eclipse.e4.rcp.feature.group" version="1.6.500.v20190529-1801"/>
-<unit id="org.eclipse.e4.rcp.source.feature.group" version="1.6.500.v20190529-1801"/>
+<unit id="org.eclipse.e4.rcp.feature.group" version="1.6.500.v20190605-1801"/>
+<unit id="org.eclipse.e4.rcp.source.feature.group" version="1.6.500.v20190605-1801"/>
 <unit id="org.eclipse.ecf.core.feature.feature.group" version="1.5.3.v20190423-0625"/>
 <unit id="org.eclipse.ecf.core.ssl.feature.feature.group" version="1.1.200.v20190502-0212"/>
 <unit id="org.eclipse.ecf.filetransfer.feature.feature.group" version="3.14.5.v20190423-0614"/>
 <unit id="org.eclipse.ecf.filetransfer.httpclient45.feature.feature.group" version="1.0.0.v20190530-1947"/>
 <unit id="org.eclipse.ecf.filetransfer.ssl.feature.feature.group" version="1.1.100.v20180301-0132"/>
-<unit id="org.eclipse.emf.common.feature.group" version="2.16.0.v20190425-1239"/>
-<unit id="org.eclipse.emf.ecore.feature.group" version="2.18.0.v20190418-0907"/>
-<unit id="org.eclipse.help.feature.group" version="2.2.600.v20190531-0245"/>
-<unit id="org.eclipse.help.source.feature.group" version="2.2.600.v20190531-0245"/>
-<unit id="org.eclipse.jdt.feature.group" version="3.18.0.v20190531-0245"/>
-<unit id="org.eclipse.jdt.source.feature.group" version="3.18.0.v20190531-0245"/>
-<unit id="org.eclipse.pde.feature.group" version="3.14.0.v20190531-0245"/>
-<unit id="org.eclipse.pde.source.feature.group" version="3.14.0.v20190531-0245"/>
-<unit id="org.eclipse.platform.feature.group" version="4.12.0.v20190531-0648"/>
-<unit id="org.eclipse.platform.source.feature.group" version="4.12.0.v20190531-0648"/>
-<unit id="org.eclipse.rcp.feature.group" version="4.12.0.v20190531-0245"/>
-<unit id="org.eclipse.rcp.source.feature.group" version="4.12.0.v20190531-0245"/>
-<repository location="http://download.eclipse.org/eclipse/updates/4.12milestones/S-4.12RC1a-201905310245/"/>
+<unit id="org.eclipse.emf.common.feature.group" version="2.16.0.v20190528-0845"/>
+<unit id="org.eclipse.emf.ecore.feature.group" version="2.18.0.v20190528-0845"/>
+<unit id="org.eclipse.help.feature.group" version="2.2.600.v20190605-1800"/>
+<unit id="org.eclipse.help.source.feature.group" version="2.2.600.v20190605-1800"/>
+<unit id="org.eclipse.jdt.feature.group" version="3.18.0.v20190605-1800"/>
+<unit id="org.eclipse.jdt.source.feature.group" version="3.18.0.v20190605-1800"/>
+<unit id="org.eclipse.pde.feature.group" version="3.14.0.v20190605-1800"/>
+<unit id="org.eclipse.pde.source.feature.group" version="3.14.0.v20190605-1800"/>
+<unit id="org.eclipse.platform.feature.group" version="4.12.0.v20190605-1801"/>
+<unit id="org.eclipse.platform.source.feature.group" version="4.12.0.v20190605-1801"/>
+<unit id="org.eclipse.rcp.feature.group" version="4.12.0.v20190605-1801"/>
+<unit id="org.eclipse.rcp.source.feature.group" version="4.12.0.v20190605-1801"/>
+<repository location="http://download.eclipse.org/eclipse/updates/4.12milestones/S-4.12RC2-201906051800/"/>
 </location>
 <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="slicer" includeSource="true" type="InstallableUnit">
 <unit id="org.eclipse.license.feature.group" version="2.0.1.v20180423-1114"/>