pgsql: Improve readability of config location params by adding newline.

Log Message:
-----------
Improve readability of config location params by adding newline.

Modified Files:
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pgsql/src/backend/utils/misc:
postgresql.conf.sample (r1.141 -> r1.142)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/misc/postgresql.conf.sample.diff?r1=1.141&r2=1.142)
pgsql/src/tools:
make_mkid (r1.8 -> r1.9)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/tools/make_mkid.diff?r1=1.8&r2=1.9)