Windows compatibility (#57)

* Add Python and Redis submodules, and remove old third-party modules

* Update VS projects (WARNING: references files that do not exist yet)

* Update code & add shims for APIs except AF_UNIX/{send,recv}msg()

* Minor style changes.

src/common/test/db_tests.c

@@ -201,7 +201,7 @@ TEST task_table_all_test(void) {
 }
 
 TEST unique_client_id_test(void) {
-  const int num_conns = 100;
+  enum { num_conns = 100 };
 
   db_client_id ids[num_conns];
   db_handle *db;

src/common/test/io_tests.c

@@ -10,6 +10,7 @@
 SUITE(io_tests);
 
 TEST ipc_socket_test(void) {
+#ifndef _WIN32
   const char *socket_pathname = "test-socket";
   int socket_fd = bind_ipc_sock(socket_pathname, true);
   ASSERT(socket_fd >= 0);
@@ -44,11 +45,12 @@ TEST ipc_socket_test(void) {
     close(socket_fd);
     unlink(socket_pathname);
   }
-
+#endif
   PASS();
 }
 
 TEST long_ipc_socket_test(void) {
+#ifndef _WIN32
   const char *socket_pathname = "long-test-socket";
   int socket_fd = bind_ipc_sock(socket_pathname, true);
   ASSERT(socket_fd >= 0);
@@ -89,6 +91,7 @@ TEST long_ipc_socket_test(void) {
   }
 
   utstring_free(test_string);
+#endif
   PASS();
 }
 

src/common/test/test_common.h

@@ -5,7 +5,7 @@
 
 #include "task.h"
 
-task_spec *example_task_spec(void) {
+static task_spec *example_task_spec(void) {
   task_id parent_task_id = globally_unique_id();
   function_id func_id = globally_unique_id();
   task_spec *task =
@@ -16,7 +16,7 @@ task_spec *example_task_spec(void) {
   return task;
 }
 
-task *example_task(void) {
+static task *example_task(void) {
   task_spec *spec = example_task_spec();
   task *instance = alloc_task(spec, TASK_STATUS_WAITING, NIL_ID);
   free_task_spec(spec);
@@ -24,7 +24,7 @@ task *example_task(void) {
 }
 
 /* Flush redis. */
-void flushall_redis() {
+static void flushall_redis() {
   redisContext *context = redisConnect("127.0.0.1", 6379);
   freeReplyObject(redisCommand(context, "FLUSHALL"));
   redisFree(context);