Fixed compile warning
Fixed bug 420662: [content assist] Context selection window should remember its size
Fixed typo
Fixed bug 423705: NPE in JFaceTextUtil.widgetLine2ModelLine
Changed core.filebuffers.tests to Java 7.

Signed-off-by: Timo Kinnunen <timo.kinnunen@gmail.com>
Changed to text.tests Java 7.

Signed-off-by: Timo Kinnunen <timo.kinnunen@gmail.com>
Changed jface.text.tests to Java 7.

Signed-off-by: Timo Kinnunen <timo.kinnunen@gmail.com>