Update to 3.17.8, fix libetpan >= 1.9, rebuild whith gnutls 3.6.14

.abf.yml

@@ -1,2 +1,2 @@
 sources:
-  claws-mail-3.17.6.tar.xz: 8f6ec879563039c732e2622c9b5e7996e40b17ce
+  claws-mail-3.17.8.tar.xz: 6e14cca60a1a0e47ccc071f0cababb2dd1a6ab22

claws-mail.spec

@@ -1,6 +1,6 @@
 %define debug_package %{nil}
 %define disable_ld_no_undefined 1
-%define flag_gtk3 0
+%define flag_gtk3 1
 
 # There are perl scripts in docs/tools and we don't want to install perl
 # modules required by these scripts
@@ -16,7 +16,7 @@
 
 Summary:	The user-friendly, lightweight and fast GTK2 based email client
 Name:		claws-mail
-Version:	3.17.6
+Version:	3.17.8
 Release:	2
 Epoch:		1
 License:	GPLv3+
@@ -34,7 +34,7 @@ BuildRequires:	imagemagick
 BuildRequires:	intltool
 BuildRequires:	compface-devel
 BuildRequires:	gpgme-devel > 0.4.5
-BuildRequires:	libetpan-devel >= 0.42
+BuildRequires:	libetpan-devel >= 1.9
 BuildRequires:	libytnef-devel
 BuildRequires:	libxml2-devel
 BuildRequires:	openldap-devel
@@ -75,6 +75,8 @@ BuildRequires:	pkgconfig(poppler-glib)
 BuildRequires:	pkgconfig(pygtk-2.0)
 BuildRequires:	pkgconfig(sm)
 BuildRequires:	pkgconfig(valgrind)
+# libressl
+BuildRequires:  pkgconfig(libressl)
 # for plugin-fancy
 BuildRequires:  %{_lib}webkitgtk1.0-devel
 Requires:	aspell-dictionary
@@ -625,6 +627,7 @@ This Claws Mail tools.
 %patch0 -p1
 
 %build
+%global optflags %{optflags} -fno-strict-aliasing -Wno-deprecated-declarations
 %configure \
 %if %{flag_gtk3}
 	--enable-gtk3 \