Bug#686215: geogebra: exporting to asymptote complains "File unicodetex not found."

[Julian Gilbey]

Package: geogebra
Version: 4.0.34.0+dfsg1-1

When exporting a page to asymptote, the result begins with:
/* File unicodetex not found. */

This appears, from the source code, to be because the (archive?) file
geogebra/export/pstricks/unicodetex is not being found by the function
geogebra/export/GeoGebraToAsymptote.java:initUnicodeTextTable when it
calls new FileReader("geogebra/export/pstricks/unicodetex")

   Julian