Removed debug output

Signed-off-by: Nils Hartmann <nils@nilshartmann.net>
Throw meaningful exception when build.properties are missing (avoid NullPointerException later)

Signed-off-by: Nils Hartmann <nils@nilshartmann.net>
Both Classpath and BootClasspath can be unspecified (null) in the Javac task

Signed-off-by: Nils Hartmann <nils@nilshartmann.net>
Upgrade to ecj-4.4

Signed-off-by: Nils Hartmann <nils@nilshartmann.net>
Support for Java8

Signed-off-by: Nils Hartmann <nils@nilshartmann.net>