libxml2: also build python subpackage on x86_64

thank Begasus for reporting.

dev-libs/libxml2/libxml2-2.10.4.recipe

@@ -10,7 +10,7 @@ available in other environments."
 HOMEPAGE="http://www.xmlsoft.org/"
 COPYRIGHT="1998-2013 Daniel Veillard.  All Rights Reserved."
 LICENSE="MIT"
-REVISION="1"
+REVISION="2"
 SOURCE_URI="https://download.gnome.org/sources/libxml2/2.10/libxml2-$portVersion.tar.xz"
 CHECKSUM_SHA256="ed0c91c5845008f1936739e4eee2035531c1c94742c6541f44ee66d885948d45"
 PATCHES="libxml2-$portVersion.patchset"
@@ -19,8 +19,14 @@ ARCHITECTURES="all"
 SECONDARY_ARCHITECTURES="x86"
 
 pythonModuleEnabled=false
-if [ "$targetArchitecture" = x86_gcc2 ] && [ -n "$secondaryArchSuffix" ]; then
-	pythonModuleEnabled=true
+if [ "$targetArchitecture" = x86_gcc2 ]; then
+	if [ -n "$secondaryArchSuffix" ]; then
+		pythonModuleEnabled=true
+	fi
+else
+	if [ -z "$secondaryArchSuffix" ]; then
+		pythonModuleEnabled=true
+	fi
 fi
 
 PROVIDES="