gtkmathview: libxslt -> libxslt-native in DEPENDS and unblacklist

There is not exactly a chance to get a useful fedora system without libxslt for
test. So this is yet another guesswork.

Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>

meta-oe/recipes-extended/mml-widget/gtkmathview_0.8.0.bb

@@ -1,5 +1,5 @@
 HOMEPAGE = "http://helm.cs.unibo.it/mml-widget/"
-DEPENDS = "t1lib gtk+ popt libxslt libxml2"
+DEPENDS = "t1lib gtk+ popt libxslt-native libxml2"
 
 LICENSE = "LGPLv3"
 LIC_FILES_CHKSUM = "file://COPYING;md5=6a6a8e020838b23406c81b19c1d46df6"
@@ -23,5 +23,3 @@ do_configure_append() {
     # avoid host polution inf pkg-config files
     sed -i "s:${STAGING_DIR_HOST}::g" `find -name '*.pc'`
 }
-
-PNBLACKLIST[gtkmathview] ?= "Fails to build with RSS http://errors.yoctoproject.org/Errors/Details/131636/"