Updates in effort to upgrade from Java 6 to Java 7.

Core/nbproject/project.properties

CoreLibs/nbproject/project.properties

ExifParser/nbproject/project.properties

HashDatabase/nbproject/project.properties

KeywordSearch/nbproject/project.properties

RecentActivity/nbproject/project.properties

Testing/nbproject/project.properties

Timeline/nbproject/project.properties

Timeline/nbproject/project.xml

Timeline/release/modules/ext/jfxrt.jar

build.xml

nbproject/platform.properties

thunderbirdparser/nbproject/project.properties