Hello,

Experiments with custom install programs exposed that the INSTALL series of
Makefile variables aren't propagated down from the gcc subdir.

This patch fixes this. Checked that it addressed the unexpected behavior we
were observing + bootstrapped & regtested on x86_64-linux-gnu.

OK to commit ?

Thanks in advance for your feedback,

With Kind Regards,

Olivier


2014-08-21  Nicolas Roche <roche@adacore.com>

        * Makefile.in (FLAGS_TO_PASS): Propagate INSTALL, INSTALL_DATA,
	INSTALL_SCRIPT and INSTALL_PROGRAM as well.

[see attached file: propagate-install.diff]