变更stream系列文件的名称，修正了部分编译错误

* 变更stream系列文件的名称为ssl_stream, tcp_stream等；
* 变更stream.h为platform.h，因该文件为平台整体公用；
* 修正了ssl_stream, ssl_sess_cache文件中的编译错误，部分实现的bug。
* 调整了tfe_future的路径，由平台实现改为公用组件。

common/src/tfe_future.cpp

@@ -0,0 +1,83 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <tfe_future.h>
+#include <tfe_utils.h>
+
+struct future
+{
+	void * user;
+	future_success_cb * cb_success;
+	future_failed_cb * cb_failed;
+};
+
+struct promise
+{
+	struct future f;
+	void * ctx;
+	promise_ctx_destroy_cb * cb_ctx_destroy;
+};
+
+struct future * promise_to_future(struct promise * p)
+{
+	return &p->f;
+}
+
+struct promise * future_to_promise(struct future * f)
+{
+	return (struct promise *) f;
+}
+
+struct future * future_create(future_success_cb * cb_success, future_failed_cb * cb_failed, void * user)
+{
+	struct promise * p = ALLOC(struct promise, 1);
+	p->f.user = user;
+	p->f.cb_success = cb_success;
+	p->f.cb_failed = cb_failed;
+	return &p->f;
+}
+
+void future_destroy(struct future * f)
+{
+	struct promise * promise = future_to_promise(f);
+	if (promise->cb_ctx_destroy != NULL)
+	{
+		promise->cb_ctx_destroy(promise);
+	}
+
+	memset(promise, 0, sizeof(struct promise));
+	free(promise);
+}
+
+void promise_failed(struct promise * p, enum e_future_error error, const char * what)
+{
+	p->f.cb_failed(error, what, p->f.user);
+	return;
+}
+
+void promise_success(struct promise * p, void * result)
+{
+	p->f.cb_success(result, p->f.user);
+	return;
+}
+
+void promise_set_ctx(struct promise * p, void * ctx, promise_ctx_destroy_cb * cb)
+{
+	p->ctx = ctx;
+	p->cb_ctx_destroy = cb;
+	return;
+}
+
+void * promise_get_ctx(struct promise * p)
+{
+	return p->ctx;
+}
+
+void * promise_dettach_ctx(struct promise * p)
+{
+	void * ctx = p->ctx;
+	p->ctx = NULL;
+	p->cb_ctx_destroy = NULL;
+	return ctx;
+}