maint: Use gnulib's xbinary-io module.

[Collin Funk]

Hi Andreas,

What do you think of the following two patches?

The first removes some unnecessary obsolete Autoconf macros. AC_PROG_CC
has handled all of those checks for a few years.

The second adds a dependency to 'xbinary-io' from Gnulib. I assume
'patch --binary' was written before that module existed. It should be
a no-op on most platforms but I think it is better to have Gnulib deal
with that portability stuff.

Collin

0001-build-Remove-obsolete-autoconf-macros.patch
Description: Text Data

0002-maint-Use-gnulib-s-xbinary-io-module.patch
Description: Text Data