Don't use non-portable operator "==" in configure.ac

The test operator == is a Bash extension and produces a wrong result if /bin/sh is not Bash. This happens on NetBSD for example:

% /bin/sh
$ test 8 == 8
test: ==: unexpected operator
$ echo $?
2

added 1 commit

• d242e2e2 - Don't use non-portable operator "==" in configure.ac

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approved this merge request

assigned to @marge-bot

Thanks!

added 31 commits

• d242e2e2...97d0b0a3 - 30 commits from branch ghc:master
• 86988e4b - Don't use non-portable operator "==" in configure.ac

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Rebased due to unrelated performance failures.

changed milestone to %9.0.1

added 147 commits

• 86988e4b...19680ee5 - 146 commits from branch ghc:master
• 1bd61efe - Don't use non-portable operator "==" in configure.ac

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I will attempt to batch this MR (!2901 (closed))...

Merged in e1aa4052

closed