o mozilla 1.0 dependency issue
1. reduce gtk dependency to xlib
2. we need libIDL >=0.6.3 and glib >=1.2.0 to build mozilla.
From mozilla/xpcom/typelib/xpidl/README
xpidl depends on Andrew Veliath and Elliot Lee's libIDL, a part of the
GNOME ORBit C ORB. We currently require libIDL >= 0.6.3, which in turn
requires glib >= 1.2.0
3. libIDL (not libIDL2) port does not exist and orbit includes libIDL and
libIDL dependency implies glib12
o No longer depends on Xvfb.
o Afaik, only JDK 1.4 is supported to build