Rebase numbuf to latest arrow (#23)

* rebase to latest arrow

* fix arrow linking

* finish rebase

* point arrow to pcmoritz's arrow

* fix

* fix macOS

* fix

setup.py

@@ -1,6 +1,13 @@
 import subprocess
 from setuptools import setup, find_packages, Extension
 import setuptools.command.install as _install
+from sys import platform
+
+extension = ""
+if platform == "linux" or platform == "linux2":
+  extension = ".so"
+elif platform == "darwin":
+  extension = ".dylib"
 
 # Because of relative paths, this must be run from inside numbuf/.
 
@@ -8,7 +15,6 @@ class install(_install.install):
   def run(self):
     subprocess.check_call(["./setup.sh"])
     subprocess.check_call(["./build.sh"])
-    subprocess.check_call(["cp", "libnumbuf.so", "numbuf/"])
     # Calling _install.install.run(self) does not fetch required packages and
     # instead performs an old-style install. See command/install.py in
     # setuptools. So, calling do_egg_install() manually here.
@@ -17,7 +23,7 @@ class install(_install.install):
 setup(name="numbuf",
       version="0.0.1",
       packages=find_packages(),
-      package_data={"numbuf": ["libnumbuf.so"]},
+      package_data={"numbuf": ["libnumbuf.so", "libarrow" + extension, "libarrow_io" + extension, "libarrow_ipc" + extension]},
       cmdclass={"install": install},
       setup_requires=["numpy"],
       include_package_data=True,