BUILD: move original mtrand module to _mtrand

Author: mattip

.gitignore

@@ -174,7 +174,7 @@ benchmarks/env
 benchmarks/numpy
 # cythonized files
 cythonize.dat
-numpy/random/_mtrand/mtrand.c
+numpy/random/_mtrand/_mtrand.c
 numpy/random/*.c
 numpy/random/legacy/*.c
 numpy/random/_mtrand/randint_helpers.pxi

numpy/random/_mtrand/mtrand.pyx renamed to numpy/random/_mtrand/_mtrand.pyx

@@ -48,7 +48,7 @@ def generate_libraries(ext, build_dir):
     # Configure mtrand
     config.add_extension('_mtrand',
                          sources=[join('_mtrand', x) for x in
-                                  ['mtrand.c', 'randomkit.c', 'initarray.c',
+                                  ['_mtrand.c', 'randomkit.c', 'initarray.c',
                                    'distributions.c']]+[generate_libraries],
                          libraries=libs,
                          depends=[join('_mtrand', '*.h'),