irssi: security bump to version 1.0.3

irssi: security bump to version 1.0.3

Fixes:

CVE-2017-9468 - Joseph Bisch discovered that Irssi does not properly handle
DCC messages without source nick/host.  A malicious IRC server can take
advantage of this flaw to cause Irssi to crash, resulting in a  denial of
service.

CVE-2017-9469 - Joseph Bisch discovered that Irssi does not properly handle
receiving incorrectly quoted DCC files.  A remote attacker can take
advantage of this flaw to cause Irssi to crash, resulting in a denial of
service.

See https://irssi.org/security/irssi_sa_2017_06.txt for more details.

Remove 0001-Get-back-to-using-pkg-config-to-check-for-OpenSSL.patch as it
applied upstream and drop autoreconf as configure.ac is no longer patched.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>