1. fix following problem

*** installing help indices
** building package indices
** installing vignettes
** testing if installed package can be loaded from temporary location
Error: package or namespace load failed for 'Matrix' in dyn.load(file, DLLpath = DLLpath, ...):
 unable to load shared object '/tmp/math/R-Matrix/work/.destdir/usr/pkg/lib/R/library/00LOCK-Matrix/00new/Matrix/libs/Matrix.so':
  /tmp/math/R-Matrix/work/.destdir/usr/pkg/lib/R/library/00LOCK-Matrix/00new/Matrix/libs/Matrix.so: Undefined PLT symbol "cholmod_metis" (symnum = 224)
Error: loading failed
Execution halted
ERROR: loading failed
* removing '/tmp/math/R-Matrix/work/.destdir/usr/pkg/lib/R/library/Matrix'
*** Error code 1

Stop.
make[1]: stopped in /export/CHROOT/usr/pkgsrc-cvs/math/R-Matrix
*** Error code 1


2. Clean up nasty patching
