[JAVA] /bin/sh portability issues in gen-classlist.sh.in

[Eric Botcazou]

> The following patch, the first in a series, fixes some shell portability
> issues building libjava using /bin/sh on Solaris.  As pointed out by
> Andrew Pinski, I should probably simply use CONFIG_SHELL, however I
> think I've managed to resolve all the remaining shell issues preventing
> bootstraping mainline GCC on Solaris/x86 with the native /bin/sh.

I think it's a lost cause, in my experience /bin/sh randomly fails to 
configure target libraries on Solaris.  I'll personally make no effort
to support /bin/sh on Solaris even if your patches go in, i.e. I'll keep 
closing PRs related to the problem as invalid.

-- 
Eric Botcazou