pgsql: Changed lexer to no longer use the default rule.

Log Message:
-----------
Changed lexer to no longer use the default rule.
Synced parser and keyword list.
Fixed parsing of CONNECT statement so it accepts a C string again.

Modified Files:
--------------
pgsql/src/interfaces/ecpg:
ChangeLog (r1.322 -> r1.323)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/ChangeLog.diff?r1=1.322&r2=1.323)
pgsql/src/interfaces/ecpg/preproc:
keywords.c (r1.74 -> r1.75)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/keywords.c.diff?r1=1.74&r2=1.75)
pgc.l (r1.148 -> r1.149)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/pgc.l.diff?r1=1.148&r2=1.149)
preproc.y (r1.328 -> r1.329)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/preproc/preproc.y.diff?r1=1.328&r2=1.329)
pgsql/src/interfaces/ecpg/test/connect:
test3.pgc (r1.2 -> r1.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/connect/test3.pgc.diff?r1=1.2&r2=1.3)
pgsql/src/interfaces/ecpg/test/expected:
connect-test3.c (r1.2 -> r1.3)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/expected/connect-test3.c.diff?r1=1.2&r2=1.3)