launcher: Log OS version on startup

src/main/launcher/main.c

@@ -20,6 +20,7 @@
 #include "util/fs.h"
 #include "util/log.h"
 #include "util/mem.h"
+#include "util/os.h"
 #include "util/str.h"
 
 /* Gratuitous API changes orz */
@@ -208,6 +209,8 @@ int main(int argc, const char **argv)
     log_to_external(
         log_body_misc, log_body_info, log_body_warning, log_body_fatal);
 
+    os_version_log();
+
     /* Load game DLL */
 
     module_context_init(&module, options.module);