update to tested platform list

[Morgan Burke]

MIPS:
        SGI running IRIX 6.5.3 (1.11.1)

Although the cvs binary appears to run correctly (haven't used it for
long), there are several bugs in the make procedure --

Both "configure" and "make" terminate with the same error message:

        Cannot access +x: No such file or directory
        Invalid mode

which appears to be caused by the command 

        chmod -f +x

(-f is not a recognized switch to chmod in Irix).  While trying to 
figure out if these errors were fatal or not, I ran the tests 
("make check"), which hung right after the lines:

Making check in src
        make  check-local
        /bin/sh ./sanity.sh `pwd`/cvs
This test should produce no other output than this line, and a final "OK".
<<< HUNG HERE WITH NO "OK"


But as I said, the binary appears to work for my purposes (client/server
checkouts and commits), and it fixes a problem I was having with v1.9.6, 
so I guess I'm a satisfied customer.

-- Morgan Burke
   morgan@sitka.triumf.ca

PS. the Irix 6.5 pre-compiled binary on cvshome.org ought to be compiled
for the R4000 (not R12000) to be executable on the widest range of SGI
systems.