[298712] Java Facet should utilize Execution Environment when updating Java Build Path
[298904] Support Java 7 in Java facet and Standard JRE runtime component
[298905] Change Java Facet id from "jst.java" to "java"
[298906] Change Java Facet version for 5.0/6.0 to 1.5/1.6
[298974] Aliasing system is needed for facet id and facet version