pgsql: Promote pg_dumpall shell/connstr quoting functions to src/fe_uti

Promote pg_dumpall shell/connstr quoting functions to src/fe_utils.

Rename these newly-extern functions with terms more typical of their new
neighbors.  No functional changes; a subsequent commit will use them in
more places.  Back-patch to 9.1 (all supported versions).  Back branches
lack src/fe_utils, so instead rename the functions in place; the
subsequent commit will copy them into the other programs using them.

Security: CVE-2016-5424

Branch
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REL9_2_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/f1d0b09cf17ee12481a62faa9413f9cc3f3f8112

Modified Files
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src/bin/pg_dump/pg_dumpall.c | 26 +++++++++++++-------------
1 file changed, 13 insertions(+), 13 deletions(-)