Updated java8 version to be used when building.


git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1732801 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/dependencymanager/release/resources/src/README.src b/dependencymanager/release/resources/src/README.src
index e2caaf0..1f6410b 100644
--- a/dependencymanager/release/resources/src/README.src
+++ b/dependencymanager/release/resources/src/README.src
@@ -37,7 +37,7 @@
   you also have to unfold the org.apache.felix.dependencymanager-r<n>-deps.zip on the same directory where you have unfolded the source archive.
   (no need to do this if you have checked out from the felix-trunk).
 
-- Install java8.
+- Install a recent java8 JDK (the software has been built and tested using java version 1.8.0_74)
 
 - Compile Dependendency Manager annotations bndtools plugin: