pgsql: Remove a few baby-C macros in fuzzystrmatch.

Log Message:
-----------
Remove a few baby-C macros in fuzzystrmatch.  Add a few missing includes.

Modified Files:
--------------
    pgsql/contrib/btree_gist:
        btree_utils_num.h (r1.6 -> r1.7)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/btree_gist/btree_utils_num.h.diff?r1=1.6&r2=1.7)
        btree_utils_var.h (r1.4 -> r1.5)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/btree_gist/btree_utils_var.h.diff?r1=1.4&r2=1.5)
    pgsql/contrib/dblink:
        dblink.h (r1.15 -> r1.16)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/dblink/dblink.h.diff?r1=1.15&r2=1.16)
    pgsql/contrib/fuzzystrmatch:
        fuzzystrmatch.c (r1.21 -> r1.22)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/fuzzystrmatch/fuzzystrmatch.c.diff?r1=1.21&r2=1.22)
        fuzzystrmatch.h (r1.13 -> r1.14)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/contrib/fuzzystrmatch/fuzzystrmatch.h.diff?r1=1.13&r2=1.14)