#56 Fix Bashism in configure

[Sam James]

configure scripts need to be runnable with a POSIX-compliant /bin/sh.

On many (but not all!) systems, /bin/sh is provided by Bash, so errors
like this aren't spotted. Notably Debian defaults to /bin/sh provided
by dash which doesn't tolerate such bashisms as '=='.

This retains compatibility with bash.

Fixes configure warnings/errors like:

configure: WARNING: tcpd.h not found
./configure: 8453: test: X: unexpected operator
checking that generated files are newer than configure... done

Patch attached, thanks!

[Jan Kara]

Thanks for the patch! It looks good. Can you please provide your attribution (Signed-off-by line) so that I can include it in the repository? Thanks!

[Sam James]

Sure, thanks!

Signed-off-by: Sam James <sam@gentoo.org>

[Jan Kara]

Thanks. Applied!

[Sam James]

Thank you very much!