Support Python 2 and 3.

Pass PYTHON=/path/to/desired/pythonVERSION to select.

Makefile.am

@@ -728,7 +728,7 @@ bindings_python_hyperdex_client_la_CFLAGS += $(CFLAGS)
 bindings_python_hyperdex_client_la_LIBADD =
 bindings_python_hyperdex_client_la_LIBADD += libhyperdex-client.la
 bindings_python_hyperdex_client_la_LIBADD += $(PYTHON_LDFLAGS)
-bindings_python_hyperdex_client_la_LDFLAGS = -module -avoid-version -export-symbols-regex initclient $(AM_LDFLAGS) $(LDFLAGS)
+bindings_python_hyperdex_client_la_LDFLAGS = -module -avoid-version -export-symbols-regex $(PYTHON_SYMBOL)client $(AM_LDFLAGS) $(LDFLAGS)
 bindings/python/hyperdex/client.c: bindings/python/hyperdex/client.pyx
 	$(pyx_verbose)cython bindings/python/hyperdex/client.pyx
 
@@ -747,7 +747,7 @@ bindings_python_hyperdex_admin_la_CFLAGS += $(CFLAGS)
 bindings_python_hyperdex_admin_la_LIBADD =
 bindings_python_hyperdex_admin_la_LIBADD += libhyperdex-admin.la
 bindings_python_hyperdex_admin_la_LIBADD += $(PYTHON_LDFLAGS)
-bindings_python_hyperdex_admin_la_LDFLAGS = -module -avoid-version -export-symbols-regex initadmin $(AM_LDFLAGS) $(LDFLAGS)
+bindings_python_hyperdex_admin_la_LDFLAGS = -module -avoid-version -export-symbols-regex $(PYTHON_SYMBOL)admin $(AM_LDFLAGS) $(LDFLAGS)
 bindings/python/hyperdex/admin.c: bindings/python/hyperdex/admin.pyx
 	$(pyx_verbose)cython bindings/python/hyperdex/admin.pyx
 

configure.ac

@@ -206,6 +206,8 @@ AC_ARG_ENABLE([python_bindings], [AS_HELP_STRING([--enable-python-bindings],
               [python_bindings=${enableval}], [python_bindings=no])
 if test x"${python_bindings}" = xyes; then
     AC_PYTHON_DEVEL([>= '2.6'])
+    AS_CASE([$PYTHON_VERSION], [3*], [pythonsym=PyInit_], [2*], [pythonsym=init], [])
+    AC_SUBST([PYTHON_SYMBOL], [${pythonsym}])
 fi
 
 AC_ARG_ENABLE([ruby_bindings], [AS_HELP_STRING([--enable-ruby-bindings],