Update build configuration for RAP Tools 3.15.0 RC1

- Use Eclipse Platform 4.18 S-4.18RC1-202011251800

Change-Id: I8267c7c4b62d8f59d3e7f40cf0183bb190b6296c
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 986dde7..37da1b1 100644
--- a/features/org.eclipse.rap.tools.feature/.forceQualifierUpdate
+++ b/features/org.eclipse.rap.tools.feature/.forceQualifierUpdate
@@ -1 +1 @@
-2020-11-20T12:00:00+00:00
+2020-12-02T12:00:00+00:00
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 2b01c62..a55c7f6 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
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <?pde version="3.8"?>
-<target name="RAP Tools target platform" sequenceNumber="73">
+<target name="RAP Tools target platform" sequenceNumber="74">
   <locations>
     <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="slicer" includeSource="true" type="InstallableUnit">
       <unit id="org.eclipse.jetty.bundles.f.feature.group" version="9.4.34.v20201102"/>
@@ -8,8 +8,8 @@
     </location>
     <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="slicer" includeSource="true" type="InstallableUnit">
       <unit id="org.eclipse.core.runtime.feature.feature.group" version="1.2.1100.v20201107-1818"/>
-      <unit id="org.eclipse.e4.rcp.feature.group" version="4.18.0.v20201119-1132"/>
-      <unit id="org.eclipse.e4.rcp.source.feature.group" version="4.18.0.v20201119-1132"/>
+      <unit id="org.eclipse.e4.rcp.feature.group" version="4.18.0.v20201125-2302"/>
+      <unit id="org.eclipse.e4.rcp.source.feature.group" version="4.18.0.v20201125-2302"/>
       <unit id="org.eclipse.ecf.core.feature.feature.group" version="1.5.701.v20201027-0550"/>
       <unit id="org.eclipse.ecf.core.ssl.feature.feature.group" version="1.1.500.v20200812-2314"/>
       <unit id="org.eclipse.ecf.filetransfer.feature.feature.group" version="3.14.1702.v20201025-2315"/>
@@ -17,17 +17,17 @@
       <unit id="org.eclipse.ecf.filetransfer.ssl.feature.feature.group" version="1.1.400.v20200812-2314"/>
       <unit id="org.eclipse.emf.common.feature.group" version="2.21.0.v20200917-1439"/>
       <unit id="org.eclipse.emf.ecore.feature.group" version="2.23.0.v20200630-0516"/>
-      <unit id="org.eclipse.help.feature.group" version="2.3.400.v20201119-0730"/>
-      <unit id="org.eclipse.help.source.feature.group" version="2.3.400.v20201119-0730"/>
-      <unit id="org.eclipse.jdt.feature.group" version="3.18.600.v20201119-0730"/>
-      <unit id="org.eclipse.jdt.source.feature.group" version="3.18.600.v20201119-0730"/>
-      <unit id="org.eclipse.pde.feature.group" version="3.14.600.v20201119-1215"/>
-      <unit id="org.eclipse.pde.source.feature.group" version="3.14.600.v20201119-1215"/>
-      <unit id="org.eclipse.platform.feature.group" version="4.18.0.v20201119-1132"/>
-      <unit id="org.eclipse.platform.source.feature.group" version="4.18.0.v20201119-1132"/>
-      <unit id="org.eclipse.rcp.feature.group" version="4.18.0.v20201119-1132"/>
-      <unit id="org.eclipse.rcp.source.feature.group" version="4.18.0.v20201119-1132"/>
-      <repository location="https://download.eclipse.org/eclipse/updates/4.18milestones/S-4.18-202011190730/"/>
+      <unit id="org.eclipse.help.feature.group" version="2.3.400.v20201125-1800"/>
+      <unit id="org.eclipse.help.source.feature.group" version="2.3.400.v20201125-1800"/>
+      <unit id="org.eclipse.jdt.feature.group" version="3.18.600.v20201125-1800"/>
+      <unit id="org.eclipse.jdt.source.feature.group" version="3.18.600.v20201125-1800"/>
+      <unit id="org.eclipse.pde.feature.group" version="3.14.600.v20201125-1800"/>
+      <unit id="org.eclipse.pde.source.feature.group" version="3.14.600.v20201125-1800"/>
+      <unit id="org.eclipse.platform.feature.group" version="4.18.0.v20201125-2302"/>
+      <unit id="org.eclipse.platform.source.feature.group" version="4.18.0.v20201125-2302"/>
+      <unit id="org.eclipse.rcp.feature.group" version="4.18.0.v20201125-2302"/>
+      <unit id="org.eclipse.rcp.source.feature.group" version="4.18.0.v20201125-2302"/>
+      <repository location="https://download.eclipse.org/eclipse/updates/4.18milestones/S-4.18RC1-202011251800/"/>
     </location>
     <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="slicer" includeSource="true" type="InstallableUnit">
       <unit id="org.eclipse.license.feature.group" version="2.0.2.v20181016-2210"/>