gcc 2.91.57 installed and works (thanks gcc maintainers!)

[Andy Tai]

gcc 2.91.57 (aka egcs 1.1) installed and works on a SGI 
Irix 6.2 system.

gcc -v
Reading specs from /local/egcs/installed-irix6/lib/gcc-lib/mips-sgi-irix6.2/egcs-2.91.57/specs
gcc version egcs-2.91.57 19980901 (egcs-1.1 release)



Thanks to gcc maintainers for all the excellent work!