add 'libs' to setup.py (as mentioned PR fastlib#26)

Author: seis

setup.py

@@ -55,8 +55,8 @@
                     'src/fcwt/fcwt.cpp',
                     'src/fcwt/fcwt_wrap.cxx'
                 ],
-                library_dirs = ['src/fcwt','src'],
-                include_dirs = ['src/fcwt','src',numpy_include],
+                library_dirs = ['src/fcwt','src','libs'],
+                include_dirs = ['src/fcwt','src','libs',numpy_include],
                 libraries = libraries,
                 extra_compile_args = comp_args,
                 extra_link_args = link_args
@@ -67,4 +67,4 @@
         package_data={'fcwt':files}
         )
 
-#swig -c++ -python fcwt-swig.i
+#swig -c++ -python fcwt-swig.i