Eliminate build/packaging dependency on jade, jadetex and pdfjadetex.
Eliminate build/packaging dependency on jade, jadetex and pdfjadetex.

Distrotech/scons,timj/scons,andrewyoung1991/scons,andrewyoung1991/scons,timj/scons,andrewyoung1991/scons,timj/scons,andrewyoung1991/scons,andrewyoung1991/scons,timj/scons,timj/scons,timj/scons,Distrotech/scons,Distrotech/scons,Distrotech/scons,timj/scons,timj/scons,andrewyoung1991/scons,Distrotech/scons,andrewyoung1991/scons,timj/scons,andrewyoung1991/scons,andrewyoung1991/scons