[pgpool-committers: 2998] pgpool: Fix for [pgpool-II 0000166]: compile issue on freebsd

[Muhammad Usama]

Fix for [pgpool-II 0000166]: compile issue on freebsd

added missing include files, The patch is contributed by
the bug reporter and enhanced a little by me.

Branch
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V3_5_STABLE

Details
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http://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=fef52de4e72ae466d0813a73507d51a8802e3fc3

Modified Files
--------------
src/include/parser/stringinfo.h | 1 +
src/include/utils/palloc.h      | 1 +
src/watchdog/wd_escalation.c    | 4 ++++
src/watchdog/wd_if.c            | 4 ++++
4 files changed, 10 insertions(+)