Workaround for filter-intra + rect-intra-pred mismatch.

This workaround is temporary, until filter-intra can work with rectangular
blocks.

Tested OK:
make clean; ../../configure --disable-install-docs --enable-unit-tests
--enable-debug --enable-aom-highbitdepth --enable-experimental
--enable-adapt-scan --enable-dual-filter --enable-ext-inter
--enable-ext-intra --enable-ext-refs --enable-ext-tx
--enable-filter-intra --enable-loop-restoration --enable-rect-tx
--enable-compound-segment --enable-interintra --enable-wedge
make -j
./test_libaom

Change-Id: I4554d1f25de9448b22465e93a7616df0c206e298
diff --git a/configure b/configure
index f8191b9..0081a8f 100755
--- a/configure
+++ b/configure
@@ -552,6 +552,9 @@
     enabled ext_comp_refs && enable_feature var_refs
     enabled ext_comp_refs && disable_feature one_sided_compound
     enabled altref2 && enable_feature ext_refs
+    # TODO(urvang): Temporary work-around for nightly tests.
+    # Need to support different width/height in filter-intra functions.
+    enabled filter_intra && disable_feature rect_intra_pred
 
     if ! enabled delta_q && enabled ext_delta_q; then
       log_echo "ext_delta_q requires delta_q, so disabling ext_delta_q"