'make distcheck' has problems with the wxt files

[Ethan M. <merritt@u.washington.edu>]

Procedure:
./prepare
./configure --readline=gnu
make distclean

Non-fatal error message during the "make check" part
----------------------------------------------------
  Can't load PNG icon(s) of the toolbar.

Fatal error:
------------
make[2]: Entering directory 
`/home/merritt/cvs/gnuplot-cvs/gnuplot-4.1.0/_build/src'
cp: cannot create regular file 
`/home/merritt/cvs/gnuplot-cvs/gnuplot-4.1.0/_build/gnuplot-4.1.0/src/wxterminal/gp_cairo.c': 
Permission denied
cp: cannot create regular file 
`/home/merritt/cvs/gnuplot-cvs/gnuplot-4.1.0/_build/gnuplot-4.1.0/src/wxterminal/wxt_gui.cpp': 
Permission denied
make[2]: *** [distdir] Error 1
make[2]: Leaving directory 
`/home/merritt/cvs/gnuplot-cvs/gnuplot-4.1.0/_build/src'
make[1]: *** [distdir] Error 1
make[1]: Leaving directory 
`/home/merritt/cvs/gnuplot-cvs/gnuplot-4.1.0/_build'
make: *** [distcheck] Error 2


I'm guessing that something in the script is failing to create the
.../_build/gnuplot-4.1.0/src/wxterminal/   directory, but I don't 
know quite how this thing works :-(

-- 
Ethan A Merritt
Biomolecular Structure Center
University of Washington, Seattle WA