Include executable path and command line options in movie file

docs/guides/format.md

@@ -11,7 +11,8 @@ The tool records inputs into a movie file which has a `.ltm` extension. It is ac
 The first one is `config.ini`, containing all meta-data of the movie file. It consists of a list of key/value pairs. Here is an example of such a file, with added comments:
 
     [General]
-    game_name=SuperMeatBoy ; name of the game executable
+    exec_path=~/SuperMeatBoy ; path of the game executable
+    command_line_args= ; command-line options for the executable
     md5=a6fa991f40ef518b302a4a492af7259c ; md5 hash of the game executable
     frame_count=81 ; frame count of the movie file
     mouse_support=true ; are mouse inputs sent to the game

src/program/movie/MovieFileHeader.cpp

@@ -128,7 +128,8 @@ void MovieFileHeader::save(uint64_t tot_frames, uint64_t nb_frames)
     QSettings config(configfile, QSettings::IniFormat);
     config.setFallbacksEnabled(false);
 
-    config.setValue("game_name", context->gamename.c_str());
+    config.setValue("exec_path", context->gamepath.c_str());
+    config.setValue("command_line_args", context->config.gameargs.c_str());
     config.setValue("frame_count", static_cast<unsigned long long>(tot_frames));
     config.setValue("mouse_support", context->config.sc.mouse_support);
     config.setValue("nb_controllers", context->config.sc.nb_controllers);