pgsql: Removed compiler warning due to unneeded unsigned declaration.

Log Message:
-----------
Removed compiler warning due to unneeded unsigned declaration.
Removed regression test that triggers those libc precision bugs on some archs.

Modified Files:
--------------
pgsql/src/interfaces/ecpg:
ChangeLog (r1.336 -> r1.337)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/ChangeLog.diff?r1=1.336&r2=1.337)
pgsql/src/interfaces/ecpg/ecpglib:
extern.h (r1.21 -> r1.22)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/ecpglib/extern.h.diff?r1=1.21&r2=1.22)
typename.c (r1.10 -> r1.11)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/ecpglib/typename.c.diff?r1=1.10&r2=1.11)
pgsql/src/interfaces/ecpg/test/compat_informix:
dec_test.pgc (r1.5 -> r1.6)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/compat_informix/dec_test.pgc.diff?r1=1.5&r2=1.6)
pgsql/src/interfaces/ecpg/test/expected:
compat_informix-dec_test.c (r1.13 -> r1.14)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/expected/compat_informix-dec_test.c.diff?r1=1.13&r2=1.14)
compat_informix-dec_test.stdout (r1.3 -> r1.4)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/expected/compat_informix-dec_test.stdout.diff?r1=1.3&r2=1.4)
pgtypeslib-num_test2.c (r1.15 -> r1.16)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/expected/pgtypeslib-num_test2.c.diff?r1=1.15&r2=1.16)
pgtypeslib-num_test2.stdout (r1.4 -> r1.5)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/expected/pgtypeslib-num_test2.stdout.diff?r1=1.4&r2=1.5)
pgsql/src/interfaces/ecpg/test/pgtypeslib:
num_test2.pgc (r1.7 -> r1.8)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/test/pgtypeslib/num_test2.pgc.diff?r1=1.7&r2=1.8)