[libgo] Support Solaris 8/9

[Ian Lance Taylor]

Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE> writes:

> FAIL: image/png
> Can't open -n
> grep: can't open -n
> grep: can't open -n
> --- FAIL: png.TestReader (1.0 seconds)
> 	basn0g01-30 open testdata/pngsuite/basn0g01-30.png: No such file or directory
> 	basn0g02-29 open testdata/pngsuite/basn0g02-29.png: No such file or directory
> 	basn0g04-31 open testdata/pngsuite/basn0g04-31.png: No such file or directory
> --- FAIL: png.TestWriter (0.2 seconds)
> 	basn0g01-30 open testdata/pngsuite/basn0g01-30.png: No such file or directory
> 	basn0g02-29 open testdata/pngsuite/basn0g02-29.png: No such file or directory
> 	basn0g04-31 open testdata/pngsuite/basn0g04-31.png: No such file or directory
> FAIL
> make: *** [image/png/check] Error 1

Just a quick note that I committed patches yesterday which should fix at
least some of those problems.  I failed to commit some of the test data
the last time I updated the library.

Ian