Add base64 to windows.mk

This matches the posix.mk makefile.

https://pubnub.atlassian.net/browse/CLEN-2403

openssl/windows.mk

@@ -1,4 +1,4 @@
-SOURCEFILES = ..\core\pbcc_set_state.c ..\core\pubnub_pubsubapi.c ..\core\pubnub_coreapi.c ..\core\pubnub_ccore_pubsub.c ..\core\pubnub_ccore.c ..\core\pubnub_netcore.c ..\lib\sockets\pbpal_resolv_and_connect_sockets.c ..\lib\sockets\pbpal_handle_socket_error.c pbpal_openssl.c pbpal_connect_openssl.c pbpal_add_system_certs_windows.c ..\core\pubnub_alloc_std.c ..\core\pubnub_assert_std.c ..\core\pubnub_generate_uuid.c ..\core\pubnub_blocking_io.c ..\windows\windows_socket_blocking_io.c ..\core\pubnub_free_with_timeout_std.c ..\windows\pbtimespec_elapsed_ms.c ..\core\pubnub_timers.c ..\core\pubnub_json_parse.c ..\lib\md5\md5.c ..\lib\pb_strnlen_s.c ..\lib\pb_strncasecmp.c ..\core\pubnub_ssl.c ..\core\pubnub_helper.c ..\windows\pubnub_version_windows.c  ..\windows\pubnub_generate_uuid_windows.c pbpal_openssl_blocking_io.c ..\core\pubnub_coreapi_ex.c pbaes256.c ..\core\c99\snprintf.c ..\lib\miniz\miniz_tinfl.c ..\lib\miniz\miniz_tdef.c ..\lib\miniz\miniz.c ..\lib\pbcrc32.c ..\core\pbgzip_compress.c ..\core\pbgzip_decompress.c ..\core\pbcc_subscribe_v2.c ..\core\pubnub_subscribe_v2.c ..\windows\msstopwatch_windows.c ..\core\pubnub_url_encode.c ..\core\pbcc_advanced_history.c ..\core\pubnub_advanced_history.c ..\core\pbcc_objects_api.c ..\core\pubnub_objects_api.c ..\core\pbcc_actions_api.c ..\core\pubnub_actions_api.c ..\core\pubnub_memory_block.c ..\lib\pbstr_remove_from_list.c ..\windows\pb_sleep_ms.c ..\core\pbauto_heartbeat.c ..\windows\pbauto_heartbeat_init_windows.c
+SOURCEFILES = ..\core\pbcc_set_state.c ..\core\pubnub_pubsubapi.c ..\core\pubnub_coreapi.c ..\core\pubnub_ccore_pubsub.c ..\core\pubnub_ccore.c ..\core\pubnub_netcore.c ..\lib\sockets\pbpal_resolv_and_connect_sockets.c ..\lib\sockets\pbpal_handle_socket_error.c pbpal_openssl.c pbpal_connect_openssl.c pbpal_add_system_certs_windows.c ..\core\pubnub_alloc_std.c ..\core\pubnub_assert_std.c ..\core\pubnub_generate_uuid.c ..\core\pubnub_blocking_io.c ..\windows\windows_socket_blocking_io.c ..\core\pubnub_free_with_timeout_std.c ..\windows\pbtimespec_elapsed_ms.c ..\core\pubnub_timers.c ..\core\pubnub_json_parse.c ..\lib\md5\md5.c ..\lib\pb_strnlen_s.c ..\lib\pb_strncasecmp.c ..\core\pubnub_ssl.c ..\core\pubnub_helper.c ..\windows\pubnub_version_windows.c  ..\windows\pubnub_generate_uuid_windows.c pbpal_openssl_blocking_io.c ..\lib\base64\pbbase64.c ..\core\pubnub_coreapi_ex.c pbaes256.c ..\core\c99\snprintf.c ..\lib\miniz\miniz_tinfl.c ..\lib\miniz\miniz_tdef.c ..\lib\miniz\miniz.c ..\lib\pbcrc32.c ..\core\pbgzip_compress.c ..\core\pbgzip_decompress.c ..\core\pbcc_subscribe_v2.c ..\core\pubnub_subscribe_v2.c ..\windows\msstopwatch_windows.c ..\core\pubnub_url_encode.c ..\core\pbcc_advanced_history.c ..\core\pubnub_advanced_history.c ..\core\pbcc_objects_api.c ..\core\pubnub_objects_api.c ..\core\pbcc_actions_api.c ..\core\pubnub_actions_api.c ..\core\pubnub_memory_block.c ..\lib\pbstr_remove_from_list.c ..\windows\pb_sleep_ms.c ..\core\pbauto_heartbeat.c ..\windows\pbauto_heartbeat_init_windows.c
 
 OBJFILES = pbcc_set_state.obj pubnub_pubsubapi.obj pubnub_coreapi.obj pubnub_ccore_pubsub.obj pubnub_ccore.obj pubnub_netcore.obj pbpal_resolv_and_connect_sockets.obj pbpal_handle_socket_error.obj pbpal_openssl.obj pbpal_connect_openssl.obj pbpal_add_system_certs_windows.obj pubnub_alloc_std.obj pubnub_assert_std.obj pubnub_generate_uuid.obj pubnub_blocking_io.obj pubnub_free_with_timeout_std.obj pbtimespec_elapsed_ms.obj pubnub_timers.obj pubnub_json_parse.obj md5.obj pb_strnlen_s.obj pb_strncasecmp.obj pubnub_ssl.obj pubnub_helper.obj pubnub_version_windows.obj pubnub_generate_uuid_windows.obj pbpal_openssl_blocking_io.obj windows_socket_blocking_io.obj pbbase64.obj pubnub_coreapi_ex.obj pbaes256.obj snprintf.obj miniz_tinfl.obj miniz_tdef.obj miniz.obj pbcrc32.obj pbgzip_compress.obj pbgzip_decompress.obj pbcc_subscribe_v2.obj pubnub_subscribe_v2.obj msstopwatch_windows.obj pubnub_url_encode.obj pbcc_advanced_history.obj pubnub_advanced_history.obj pbcc_objects_api.obj pubnub_objects_api.obj pbcc_actions_api.obj pubnub_actions_api.obj pubnub_memory_block.obj pbstr_remove_from_list.obj pb_sleep_ms.obj pbauto_heartbeat.obj pbauto_heartbeat_init_windows.obj