* libF77/*: Delete KR_headers cruft. * libI77/*: Likewise. * libU77/*: Likewise. From-SVN: r54132
* libU77/alarm_.c: Separate the #ifdef KR_headers logic from the G77_alarm_0 function definition. Check for SIG_ERR and provide our own if missing. From-SVN: r39256
"libf2c" directory. From-SVN: r17568