Fix configure probe for sys/ucred.h.
The configure script's test for <sys/ucred.h> did not work on OpenBSD,
because on that platform <sys/param.h> has to be included first.
As a result, socket peer authentication was disabled on that platform.
Problem introduced in commit be4585b1c27ac5dbdd0d61740d18f7ad9a00e268.
Andres Freund, slightly simplified by me.
Branch
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REL9_1_STABLE
Details
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http://git.postgresql.org/pg/commitdiff/3ba763bd95b6eb027bc87e73806241b460807091
Modified Files
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configure | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++++++----
configure.in | 14 ++++++++---
2 files changed, 83 insertions(+), 7 deletions(-)