added dependencies and build files (loosely inspired by Sebastian Dorda's love-native-android)

jni/mpg123-1.13.4/makedll.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+if test -e Makefile; then
+	make clean
+fi
+options="$@"
+echo "using options: $options"
+CFLAGS="-march=i686" ./configure --disable-modules --with-cpu=x86_dither $options &&
+cd src/libmpg123 &&
+make &&
+cp .libs/libmpg123-0.dll ../../ &&
+cp .libs/libmpg123-0.dll.def ../../libmpg123-0.def
+cd ../../ &&
+echo "Now run that lib tool... perhaps you want to strip, too.
+Hints:
+	strip --strip-unneeded libmpg123-0.dll
+	lib /machine:i386 /def:libmpg123-0.def" ||
+echo You got some trouble.
+
+