Joachim fixed some bugs in numeric handling in pgtypeslib.

src/interfaces/ecpg/ChangeLog

src/interfaces/ecpg/pgtypeslib/numeric.c

src/interfaces/ecpg/test/compat_informix/test_informix.pgc

...rfaces/ecpg/test/expected/compat_informix-test_informix.c

...s/ecpg/test/expected/compat_informix-test_informix.stderr

...s/ecpg/test/expected/compat_informix-test_informix.stdout

src/interfaces/ecpg/test/expected/pgtypeslib-dt_test.c

src/interfaces/ecpg/test/expected/pgtypeslib-dt_test.stderr

src/interfaces/ecpg/test/expected/pgtypeslib-dt_test.stdout

src/interfaces/ecpg/test/expected/pgtypeslib-num_test.c

src/interfaces/ecpg/test/expected/pgtypeslib-num_test.stderr

src/interfaces/ecpg/test/expected/pgtypeslib-num_test.stdout

src/interfaces/ecpg/test/expected/pgtypeslib-num_test2.c

...interfaces/ecpg/test/expected/pgtypeslib-num_test2.stderr

...interfaces/ecpg/test/expected/pgtypeslib-num_test2.stdout

src/interfaces/ecpg/test/expected/sql-dyntest2.c

src/interfaces/ecpg/test/expected/sql-dyntest2.stderr

src/interfaces/ecpg/test/expected/sql-dyntest2.stdout

src/interfaces/ecpg/test/pgtypeslib/Makefile

src/interfaces/ecpg/test/pgtypeslib/dt_test.pgc