pgsql-server: Synced parser.

Log Message:
-----------
Synced parser.
Removed Oracle transaction syntax to fix shift/reduce error.

Modified Files:
--------------
    pgsql-server/src/interfaces/ecpg:
        ChangeLog (r1.276 -> r1.277)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/interfaces/ecpg/ChangeLog.diff?r1=1.276&r2=1.277)
    pgsql-server/src/interfaces/ecpg/preproc:
        ecpg_keywords.c (r1.29 -> r1.30)

(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/interfaces/ecpg/preproc/ecpg_keywords.c.diff?r1=1.29&r2=1.30)
        keywords.c (r1.66 -> r1.67)

(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/interfaces/ecpg/preproc/keywords.c.diff?r1=1.66&r2=1.67)
        preproc.y (r1.296 -> r1.297)

(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/interfaces/ecpg/preproc/preproc.y.diff?r1=1.296&r2=1.297)