fix some lintian warning
add debian/copy
using dpkg-parsechangelog to get VERSION in debian/rule
using help2man to generate man files
new man docs for findbugs
install files using .install
adding -Dswing.defaultlaf=com.sun.java.swing.plaf.gtk.GTKLookAndFeel to findbugs script
add all build/bin to /usr/share/findbugs/bin
change mode of bin/findbugs.ico
fix findbugs lib dependency
create .links for linking /usr/bin/findbugs
delete extra files