dev.ukanth.ufirewall: Update build metadata for v1.2.7 (141)

Upstream has greatly simplified the native builds, and the new build=
field reflects this.

Compiles successfully under the standard raring32 build server image.

metadata/dev.ukanth.ufirewall.txt

@@ -195,6 +195,13 @@ Build:1.2.6.1,136
         $$NDK$$/ndk-build NDK_PROJECT_PATH=. APP_BUILD_SCRIPT=external/nflog/Android.mk && \
         mv libs/armeabi/nflog res/raw/
 
+Build:1.2.7,141
+    commit=v1.2.7
+    buildjni=no
+    submodules=yes
+    prebuild=rm -f res/raw/{iptables,ip6tables,busybox,nflog}*
+    build=make -C external NDK=$$NDK$$
+
 # iptables patch doesn't work with ndk-r9 (even with legacy toolchains)!
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