register as second parameter to the REGISTER macro.
* sysdeps/ia64/tls.h (DB_THREAD_SELF): Likewise.
* sysdeps/powerpc/tls.h (DB_THREAD_SELF): Likewise.
* sysdeps/sh/tls.h (DB_THREAD_SELF): Likewise.
* sysdeps/sparc/tls.h (DB_THREAD_SELF): Likewise.
* sysdeps/s390/tls.h (DB_THREAD_SELF): Pass __WORDSIZE as bit size
of thread register as second parameter to REGISTER macro in 64 case.
(cfsetospeed): Only set c_ospeed under [_HAVE_STRUCT_TERMIOS_C_OSPEED].
(cfsetispeed): Only set c_ispeed under [_HAVE_STRUCT_TERMIOS_C_ISPEED].
* sysdeps/unix/sysv/linux/bits/termios.h
(_HAVE_STRUCT_TERMIOS_C_ISPEED, _HAVE_STRUCT_TERMIOS_C_OSPEED): Define.
* sysdeps/unix/sysv/linux/alpha/bits/termios.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/termios.h: Likewise.