add directory libs

libs/jumplibs/pbmplus0.README

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+Notice:
+  This is a package of the binaries from the 'pbmplus' package. The
+  binaries are linked with my graphics jumptable lib, so you'll 
+  need the package libgr01.TZ as well to use the programs. Source 
+  code and manual of the program are available at other spots in
+  in a 'pbmplus' package. Version of the package used was 10dec91.
+
+Warning: 
+  The graphics jumptable lib is in a testing phase. The binaries work
+  correctly as far as I can tell. I've not tested all of them....
+
+Packaged by:
+  Rob Hooft (hooft@chem.ruu.nl)
+
+Author:
+  Jef Poskanzer