Improve build-time check that libpq doesn't call exit().
Further fixes for commit
dc227eb82. Per suggestion from
Peter Eisentraut, use a stamp-file to control when the check
is run, avoiding repeated executions during "make all".
Also, remove "-g" switch for nm: it's useless and some versions
of nm consider it to conflict with "-u". (Thanks to Noah Misch
for running down that portability issue.)
Discussion: https://postgr.es/m/
3128896.
1624742969@sss.pgh.pa.us