Update libmpcdec.spec file

extras/contrib/src/Patches/libmpcdec.spec

@@ -30,9 +30,9 @@ make DESTDIR=$RPM_BUILD_ROOT install
 %files
 %defattr(-,root,root)
 %doc AUTHORS ChangeLog COPYING INSTALL README
-/usr/lib/libmpcdec.so
-/usr/lib/libmpcdec.so.3
-/usr/lib/libmpcdec.so.3.1.1
+%{_libdir}/libmpcdec.so
+%{_libdir}/libmpcdec.so.3
+%{_libdir}/libmpcdec.so.3.1.1
 
 %package devel
 Summary: Development headers and libraries for Musepack decoder library
@@ -41,16 +41,17 @@ Requires: libmpcdec
 
 %files devel
 %defattr(-,root,root)
-/usr/include/mpcdec/config_types.h
-/usr/include/mpcdec/decoder.h
-/usr/include/mpcdec/huffman.h
-/usr/include/mpcdec/math.h
-/usr/include/mpcdec/mpcdec.h
-/usr/include/mpcdec/reader.h
-/usr/include/mpcdec/requant.h
-/usr/include/mpcdec/streaminfo.h
-/usr/lib/libmpcdec.a
-/usr/lib/libmpcdec.la
+%{_includedir}/mpcdec/config_types.h
+%{_includedir}/mpcdec/decoder.h
+%{_includedir}/mpcdec/huffman.h
+%{_includedir}/mpcdec/math.h
+%{_includedir}/mpcdec/mpcdec.h
+%{_includedir}/mpcdec/reader.h
+%{_includedir}/mpcdec/requant.h
+%{_includedir}/mpcdec/streaminfo.h
+%{_includedir}/mpcdec/config_win32.h
+%{_libdir}/libmpcdec.a
+%{_libdir}/libmpcdec.la
 
 %description devel
 Development headers and libraries for Musepack decoder library.