pgsql: Split the ecpg translation support into a separate catalog for

Log Message:
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Split the ecpg translation support into a separate catalog for the ecpg
preprocessor and the library. This is useful for a number of reasons:

* The preprocessor and the library are in some cases installed in separate
packages and used by different classes of users.

* The library MO files need a different versioning scheme to account for the
soname.

* The makefiles are simpler, more robust, and easier to maintain this way.
(NLS web site was prone to break everytime a build rule changes.)

* Translators might choose to focus on the ecpglib, because that is more
user-facing.

* There was virtually no overlap, so nothing is lost.

Modified Files:
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pgsql/src/interfaces/ecpg/ecpglib:
misc.c (r1.46 -> r1.47)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/ecpglib/misc.c?r1=1.46&r2=1.47)

Added Files:
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pgsql/src/interfaces/ecpg/ecpglib:
nls.mk (r1.1)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/ecpglib/nls.mk?rev=1.1&content-type=text/x-cvsweb-markup)
pgsql/src/interfaces/ecpg/preproc:
nls.mk (r1.1)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/nls.mk?rev=1.1&content-type=text/x-cvsweb-markup)

Removed Files:
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pgsql/src/interfaces/ecpg:
nls.mk
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/nls.mk)