pgsql: Reverse out changes to canonicalize_path(), per suggestion from

Log Message:
-----------
Reverse out changes to canonicalize_path(), per suggestion from Tom.

Modified Files:
--------------
pgsql/src/backend/postmaster:
postmaster.c (r1.465 -> r1.466)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/postmaster/postmaster.c.diff?r1=1.465&r2=1.466)
pgsql/src/port:
Makefile (r1.26 -> r1.27)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/port/Makefile.diff?r1=1.26&r2=1.27)
path.c (r1.55 -> r1.56)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/port/path.c.diff?r1=1.55&r2=1.56)