More on 971031 libio failures

[neal@ctd.comsat.com]

egcs971031 i586-linux-glibc2.
There are 3 failures in libio.  They are due to -lio.  There is no
such library.

libio.log says:
FAIL: tfformat.c compilation 
XFAIL: tfformat.c execution 
testcase ./libio.tests/tfformat.exp completed in 20 seconds
Running ./libio.tests/tiformat.exp ...
Executing on host: /usr/local/src/egcs-971031/gcc/xgcc -B/usr/local/src/egcs-971031/gcc/ ./../tests/tiformat.c  -O3 -I.. -I./..  -DTEST_LIBIO  -L/usr/local/src/egcs-971031/libraries/libiberty -g -lio -liberty   -lm  -o /usr/local/src/egcs-971031/libraries/libio/testsuite/tiformat   
compiler exited with status 1
output is:
/usr/i586-pc-linux-gnu/bin/ld: cannot open -lio: No such file or directory
collect2: ld returned 1 exit status

What's this -lio?

Executing on host: /usr/local/src/egcs-971031/gcc/xgcc -B/usr/local/src/egcs-971031/gcc/ ./../tests/tstdiomisc.c  -O3 -I.. -I./..   -L/usr/local/src/egcs-971031/libraries/libiberty -g -lio -liberty   -lm  -o /usr/local/src/egcs-971031/libraries/libio/testsuite/tstdiomisc   
compiler exited with status 1
output is:
/usr/i586-pc-linux-gnu/bin/ld: cannot open -lio: No such file or directory
collect2: ld returned 1 exit status