Try to fix doc build problem.

Change-Id: I7466a1551d14834ade51556faf6ee32cf2d357fd
Signed-off-by: Greg Watson <g.watson@computer.org>
diff --git a/core/org.eclipse.ptp.doc.isv/pom.xml b/core/org.eclipse.ptp.doc.isv/pom.xml
index 4f379b0..f858cfe 100644
--- a/core/org.eclipse.ptp.doc.isv/pom.xml
+++ b/core/org.eclipse.ptp.doc.isv/pom.xml
@@ -142,6 +142,14 @@
 							<type>eclipse-plugin</type>
 						</dependency>
 					</dependencies>
+					<!-- This needs to be explicitely set now, see https://bugs.eclipse.org/bugs/show_bug.cgi?id=395281 -->
+					<repositories>
+						<repository>
+							<id>platform</id>
+							<layout>p2</layout>
+							<url>${help-docs-eclipserun-repo}</url>
+						</repository>
+					</repositories>
 				</configuration>
 				<executions>
 					<execution>
diff --git a/pom.xml b/pom.xml
index c9de3ac..bc568ea 100644
--- a/pom.xml
+++ b/pom.xml
@@ -27,6 +27,7 @@
 		<photran-site>https://hudson.eclipse.org/ptp/job/ptp-nightly-photran/lastSuccessfulBuild/artifact/org.eclipse.photran.repo/target/repository/</photran-site>
 		<remote-site>http://download.eclipse.org/tools/ptp/builds/remote/${remote-version}</remote-site>
 		<license-site>http://download.eclipse.org/cbi/updates/license</license-site>
+		<help-docs-eclipserun-repo>http://download.eclipse.org/eclipse/updates/4.5</help-docs-eclipserun-repo>
 		<!-- The following property is used by the production profile to install the final repo and  -->
 		<!-- associated components. It should be overridden if installing into a different location. -->
 		<ptp-install-dir>/home/data/httpd/download.eclipse.org/tools/ptp/builds/${ptp-version}</ptp-install-dir>