dev-db/libiodbc: new version 3.5.12.

dev-db/libiodbc: new version 3.5.12.

This new version comes with a few changes. Most noticeably, the ebuild
was updated to EAPI=6 and the eutils eclass was dropped. One patch
(fix-runpaths-r1.patch) had to be revisioned to make it compatible
with eapply.

Another patch, libiodbc-*-multilib.patch, had to be updated to apply
to the new version. I duplicated the additions/deletions in the
original patch exactly. Two other patches, libiodbc-3.52.7-gtk.patch
and libiodbc-3.52.8-gtk-parallel-make.patch, have become obsolete and
were removed completely.

I removed a "chmod -x include/*.h" hack, as it looks no longer
necessary. I then added a new hack, "touch ChangeLog" before
eautoreconf.

Gentoo-Bug: 516300

Package-Manager: portage-2.2.28