[patch] sco5 configuration

[Bruno Haible]

Without the following patch, "./configure --target=i486-sco5" doesn't succeed.

Sun Feb 22 11:21:31 1998  Bruno Haible  <bruno@linuix.mathematik.uni-karlsruhe.de>
        * config.sub (sco5): Fix typo.

*** egcs-980214/config.sub.bak	Sun Feb 22 10:19:29 1998
--- egcs-980214/config.sub	Sun Feb 22 11:21:08 1998
***************
*** 112,118 ****
  		os=-hiuxwe2
  		;;
  	-sco5)
! 		os=sco3.2v5
  		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
  		;;
  	-sco4)
--- 112,118 ----
  		os=-hiuxwe2
  		;;
  	-sco5)
! 		os=-sco3.2v5
  		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
  		;;
  	-sco4)
*** egcs-980214/gcc/config.sub.bak	Sun Feb 22 10:19:53 1998
--- egcs-980214/gcc/config.sub	Sun Feb 22 11:20:57 1998
***************
*** 102,108 ****
  		os=-hiuxwe2
  		;;
  	-sco5)
! 		os=sco3.2v5
  		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
  		;;
  	-sco4)
--- 102,108 ----
  		os=-hiuxwe2
  		;;
  	-sco5)
! 		os=-sco3.2v5
  		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
  		;;
  	-sco4)