Upgrade Gwenhywfar to latest release and don't build libgwengui-gtk2.

gnucash.modules

@@ -142,8 +142,8 @@
   </autotools>
 
   <autotools id="gwenhywfar" autogen-sh="configure"
-	     autogenargs="--with-guis=gtk2 --enable-local-install --disable-binreloc --disable-ssl">
-    <branch module="gnucash/Dependencies/gwenhywfar-4.17.0.tar.gz" version="4.17.0"
+	     autogenargs="--with-guis='' --enable-local-install --disable-binreloc --disable-ssl">
+    <branch module="gnucash/Dependencies/gwenhywfar-4.18.0.tar.gz" version="4.18.0"
 	    repo="sourceforge">
     </branch>
     <dependencies>
@@ -153,7 +153,7 @@
   </autotools>
 
   <autotools id="gwenhywfar-svn" autogen-template="make -fMakefile.cvs &amp;&amp; %(srcdir)s/configure --prefix %(prefix)s --libdir %(libdir)s %(autogenargs)s"
-	     autogenargs="--with-guis=gtk2 --enable-local-install --disable-binreloc --disable-ssl">
+	     autogenargs="--with-guis='' --enable-local-install --disable-binreloc --disable-ssl">
     <branch module="gwenhywfar" repo="aquamaniac"/>
     <dependencies>
       <dep package="gcrypt"/>

jhbuildrc.in

@@ -78,6 +78,5 @@ module_makeargs["aqbanking"]="-j 1"
 module_makeargs["gnucash"]="-j 1"
 module_makeargs["gnucash-git"]="-j 1"
 
-module_extra_env["gwenhywfar"]={'CPPFLAGS':_popen('pkg-config --cflags gtk+-2.0'), 'LDFLAGS':_popen('pkg-config --libs gtk+-2.0')}
 module_extra_env["gnucash"]={'ACLOCAL_FLAGS':'-I' + os.path.join('/mingw32', 'share', 'aclocal')}