abigail.m4: Fix copyright notice

I wrote this file and added it to the repository in the commit:

    e4fefbdb Allow autoconf-based clients to detect the library

But then I added the wrong copyright notice back then.  Fixed thus.

	* abigail.m4: Mention Red Hat in the copyright and myself as author.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>
1 file changed