[top level] autoconfiscate INSTALL usage

[Zack Weinberg]

Nathanael Nerode <neroden@twcny.rr.com> writes:

> Submitting for general consideration.  Plus, it affects a bug.  Tested
> on i686-pc-linux-gnu.

I've been wondering for years why GCC 'make install' never used the
perfectly good /usr/bin/install on Linux or Solaris.

> +INSTALL_DATA = @INSTALL_DATA

Typo - need a trailing @.

Do similar patches need to be put into the subdirectory Makefiles, or
do they just take the values of INSTALL_* passed down from the top
level?

zw