Rename module sys_ioctl to sys_ioctl-h. * modules/sys_ioctl-h: Renamed from modules/sys_ioctl. * modules/sys_ioctl-h-tests: Renamed from modules/sys_ioctl-tests. * modules/sys_ioctl-h-c++-tests: Renamed from modules/sys_ioctl-c++-tests. * tests/test-sys_ioctl-h.c: Renamed from tests/test-sys_ioctl.c. * tests/test-sys_ioctl-h-c++.cc: Renamed from tests/test-sys_ioctl-c++.cc. * doc/glibc-headers/sys_ioctl.texi: Update. * modules/* (Depends-on): Update. * modules/sys_ioctl: New file.