pgsql: Provide error hint if TAP tests are not enabled

Provide error hint if TAP tests are not enabled

The error message for trying to run the TAP tests in a tree not
configured with --enable-tap-tests is quite terse, and could be
made more helpful to new developers onboarding to postgres. This
adds a small hint on how to get the tests running in such cases.

Author: Kevin Burke <kevin@burke.dev>
Discussion: /messages/by-id/CAKcy5ejKVYwUXguQcd6i9KHDm7cM7FzjQ+aayaPveoa_woyQpQ@mail.gmail.com

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/b5cb4db91327c2cef66207bde9cbcb592b91f93c

Modified Files
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src/Makefile.global.in | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)