add message on top main with info about branch/revision data

src/main.c

@@ -26,6 +26,7 @@
 #include "serializer.h"
 #include "deserializer.h"
 #include "optimizer-passes.h"
+#include "version.h"
 
 #define MAX_STRINGS 100
 #define MAX_NUMS 25
@@ -142,7 +143,11 @@ main (int argc __unused,
   const char *file_name = NULL;
   bool parse_only = false;
   int i;
-
+  
+  __printf("Build date: \t%s\n", jerry_build_date);
+  __printf("Commit hash:\t%s\n", jerry_commit_hash);
+  __printf("Branch name:\t%s\n", jerry_branch_name);
+  
   for (i = 1; i < argc; i++)
     {
       if (!__strcmp ("--parse-only", argv[i]))

src/version.h

@@ -0,0 +1,23 @@
+/* Copyright 2014 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef VERSION_H
+#define VERSION_H
+
+static const char *jerry_build_date = "30/07/2014";
+static const char *jerry_commit_hash = "d309ab13d00abe21a83862e5983b12e7b766fe5a";
+static const char *jerry_branch_name = "refs/heads/master";
+
+#endif	/* VERSION_H */