pgsql: Update of install-sh, mkinstalldirs, and associated configury

Log Message:
-----------
Update of install-sh, mkinstalldirs, and associated configury

Update install-sh to that from Autoconf 2.63, plus our Darwin-specific
changes (which I simplified a bit).  install-sh is now able to install
multiple files in one run, so we could simplify our makefiles sometime.

install-sh also now has a -d option to create directories, so we don't need
mkinstalldirs anymore.

Use AC_PROG_MKDIR_P in configure.in, so we can use mkdir -p when available
instead of install-sh -d.  For consistency with the rest of the world,
the corresponding make variable has been renamed from $(mkinstalldirs) to
$(MKDIR_P).

Modified Files:
--------------
    pgsql:
        configure (r1.652 -> r1.653)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/configure?r1=1.652&r2=1.653)
        configure.in (r1.608 -> r1.609)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/configure.in?r1=1.608&r2=1.609)
    pgsql/config:
        Makefile (r1.2 -> r1.3)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/config/Makefile?r1=1.2&r2=1.3)
        install-sh (r1.7 -> r1.8)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/config/install-sh?r1=1.7&r2=1.8)
    pgsql/doc/src/sgml:
        Makefile (r1.127 -> r1.128)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/Makefile?r1=1.127&r2=1.128)
    pgsql/src:
        Makefile (r1.46 -> r1.47)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/Makefile?r1=1.46&r2=1.47)
        Makefile.global.in (r1.257 -> r1.258)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/Makefile.global.in?r1=1.257&r2=1.258)
        Makefile.shlib (r1.120 -> r1.121)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/Makefile.shlib?r1=1.120&r2=1.121)
        nls-global.mk (r1.20 -> r1.21)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/nls-global.mk?r1=1.20&r2=1.21)
    pgsql/src/backend:
        Makefile (r1.132 -> r1.133)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/Makefile?r1=1.132&r2=1.133)
    pgsql/src/backend/catalog:
        Makefile (r1.70 -> r1.71)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/catalog/Makefile?r1=1.70&r2=1.71)
    pgsql/src/backend/snowball:
        Makefile (r1.6 -> r1.7)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/snowball/Makefile?r1=1.6&r2=1.7)
    pgsql/src/backend/tsearch:
        Makefile (r1.9 -> r1.10)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/tsearch/Makefile?r1=1.9&r2=1.10)
    pgsql/src/backend/utils/mb/conversion_procs:
        Makefile (r1.22 -> r1.23)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/mb/conversion_procs/Makefile?r1=1.22&r2=1.23)
    pgsql/src/bin/initdb:
        Makefile (r1.57 -> r1.58)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/initdb/Makefile?r1=1.57&r2=1.58)
    pgsql/src/bin/pg_config:
        Makefile (r1.21 -> r1.22)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_config/Makefile?r1=1.21&r2=1.22)
    pgsql/src/bin/pg_controldata:
        Makefile (r1.18 -> r1.19)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_controldata/Makefile?r1=1.18&r2=1.19)
    pgsql/src/bin/pg_ctl:
        Makefile (r1.26 -> r1.27)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_ctl/Makefile?r1=1.26&r2=1.27)
    pgsql/src/bin/pg_dump:
        Makefile (r1.67 -> r1.68)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_dump/Makefile?r1=1.67&r2=1.68)
    pgsql/src/bin/pg_resetxlog:
        Makefile (r1.20 -> r1.21)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/pg_resetxlog/Makefile?r1=1.20&r2=1.21)
    pgsql/src/bin/psql:
        Makefile (r1.63 -> r1.64)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/Makefile?r1=1.63&r2=1.64)
    pgsql/src/bin/scripts:
        Makefile (r1.42 -> r1.43)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/bin/scripts/Makefile?r1=1.42&r2=1.43)
    pgsql/src/include:
        Makefile (r1.28 -> r1.29)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/include/Makefile?r1=1.28&r2=1.29)
    pgsql/src/interfaces/ecpg/include:
        Makefile (r1.33 -> r1.34)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/include/Makefile?r1=1.33&r2=1.34)
    pgsql/src/interfaces/ecpg/preproc:
        Makefile (r1.143 -> r1.144)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/Makefile?r1=1.143&r2=1.144)
    pgsql/src/interfaces/libpq:
        Makefile (r1.174 -> r1.175)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/libpq/Makefile?r1=1.174&r2=1.175)
    pgsql/src/makefiles:
        Makefile (r1.2 -> r1.3)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/makefiles/Makefile?r1=1.2&r2=1.3)
        pgxs.mk (r1.16 -> r1.17)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/makefiles/pgxs.mk?r1=1.16&r2=1.17)
    pgsql/src/pl/tcl/modules:
        Makefile (r1.4 -> r1.5)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/pl/tcl/modules/Makefile?r1=1.4&r2=1.5)
    pgsql/src/port:
        Makefile (r1.37 -> r1.38)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/port/Makefile?r1=1.37&r2=1.38)
    pgsql/src/test/regress:
        GNUmakefile (r1.77 -> r1.78)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/test/regress/GNUmakefile?r1=1.77&r2=1.78)
    pgsql/src/timezone:
        Makefile (r1.31 -> r1.32)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/timezone/Makefile?r1=1.31&r2=1.32)
    pgsql/src/timezone/tznames:
        Makefile (r1.2 -> r1.3)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/timezone/tznames/Makefile?r1=1.2&r2=1.3)

Removed Files:
-------------
    pgsql/config:
        mkinstalldirs
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/config/mkinstalldirs)