./configure --prefix=DIR && make && make install tries to install files
in directories outside of DIR.  This happens both with trunk (r66412)
and 2.6b3.  This is a problem for users of GNU stow, for example.  I
know that certainly this worked fairly recently on the py3k branch, for
example, and I believe it also used to work on trunk.

I'm not certain whether in this particular run the --prefix directory
existed or not prior to make install, but I certainly get essentially
the same failure regardless of whether that directory exists.

~/src/Python-2.6b3$ ./configure  --prefix=/home/john/stow/python26b3
...
~/src/Python-2.6b3$ make
...
~/src/Python-2.6b3$ make install
/usr/bin/install -c python-config
/home/john/stow/python26b3/bin/python2.6-config
rm python-config
./python -E ./setup.py install \
	   	--prefix=/home/john/stow/python26b3 \
		--install-scripts=/home/john/stow/python26b3/bin \
		--install-platlib=/home/john/stow/python26b3/lib/python2.6/lib-dynload \
		--root=/
running install
running build
running build_ext
INFO: Can't locate Tcl/Tk libs and/or headers

Failed to find the necessary bits to build these modules:
_bsddb             _tkinter           bsddb185        
dbm                gdbm               sunaudiodev     
To find the necessary bits, look in setup.py in detect_modules() for the
module's name.

running build_scripts
running install_lib
copying build/lib.linux-i686-2.6/_random.so ->
/home/john/lib/python2.6/site-packages
error: could not delete
'/home/john/lib/python2.6/site-packages/_random.so': Permission denied
make: *** [sharedinstall] Error 1