fd: Rename fdparms.ctl -> .fd_ctl

For easier grepping.
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

criu/files.c

@@ -325,7 +325,7 @@ static int fill_fd_params(struct parasite_ctl *ctl, int fd, int lfd,
 		return -1;
 
 	p->fs_type	= fsbuf.f_type;
-	p->ctl		= ctl;
+	p->fd_ctl	= ctl;
 	p->fd		= fd;
 	p->pos		= fdinfo.pos;
 	p->flags	= fdinfo.flags;

criu/include/files.h

@@ -49,7 +49,7 @@ struct fd_parms {
 	long		fs_type;
 	int		mnt_id;
 
-	struct parasite_ctl *ctl;
+	struct parasite_ctl *fd_ctl;
 };
 
 #define FD_PARMS_INIT			\

criu/tty.c

@@ -1694,7 +1694,7 @@ static int dump_tty_info(int lfd, u32 id, const struct fd_parms *p, struct tty_d
 	BUILD_BUG_ON(sizeof(termios.c_cc) != sizeof(void *));
 	BUILD_BUG_ON((sizeof(termios.c_cc) * TERMIOS_NCC) < sizeof(t.c_cc));
 
-	pti = parasite_dump_tty(p->ctl, p->fd, driver->type);
+	pti = parasite_dump_tty(p->fd_ctl, p->fd, driver->type);
 	if (!pti)
 		return -1;