compel: plugins, std -- Use compel_plugin entry point routine name

Plain "main" makes compilers unhappy since it's
known predefined name.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

compel/plugins/std/std.c

@@ -6,7 +6,7 @@
 
 #include "asm/prologue.h"
 
-extern int main(void *arg_p, unsigned int arg_s);
+extern int compel_main(void *arg_p, unsigned int arg_s);
 
 static struct prologue_init_args *init_args;
 static int ctl_socket = -1;
@@ -75,7 +75,7 @@ int __export_std_compel_start(struct prologue_init_args *args,
 	}
 
 	if (!ret)
-		ret = main(args->arg_p, args->arg_s);
+		ret = compel_main(args->arg_p, args->arg_s);
 
 	for (; i > 0; i--) {
 		const plugin_init_t *d = init_array[i - 1];