[news.eclipse.platform.rcp] Setting the default compiler compliance leve

["Kai Kreuzer" <kkreuzer@xxxxxxxxxxxxxxxxx>]

I am bundling a JRE1.5 with my RCP app that also includes JDT. Although I 
need Java5 for running the RCP app, I would like to set the default Java 
compiler compliance level to "1.4". I tried doing so by adding the following 
lines to my plugin_customization.ini

org.eclipse.jdt.core/org.eclipse.jdt.core.compiler.source=1.4
org.eclipse.jdt.core/org.eclipse.jdt.core.compiler.compliance=1.4
org.eclipse.jdt.core/org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.4

but without any effect :-( The preferences Java->Compiler still say "5.0".
Does anybody know a way to change this setting?

Cheers,
Kai