[tex-live] Build fails on Mac OS X (and probably other BSD-ish systems)

[Jonathan Kew]

Building the tex-live source tree currently fails on Mac OS X  
(10.4.7), because "make install" in utils/sam2p fails with an error:

	cp: illegal option -- a

This comes from the "install" target in utils/sam2p/Makefile, which uses

	cp -a sam2p '${bindir}'

to copy the binary, but -a is not a universally-available flag for cp.

On Linux, -a is a synonym for -dpR; but as all that's being done here  
is to copy a single binary, most of the flags seem irrelevant. Could  
this be changed to use "cp -p" instead?

JK