Update build.properties
Update build.properties

Define javac source and target settings for all calls of javac within the ant file.
Dyrcona/marc4j,jasonzou/marc4j,Dyrcona/marc4j,jasonzou/marc4j,kylieloo/473marc4j,kylieloo/473marc4j,marc4j/marc4j,marc4j/marc4j,kylieloo/473marc4j