Back out odbc changes until 7.1.

src/interfaces/odbc/bind.c

src/interfaces/odbc/columninfo.c

src/interfaces/odbc/connection.c

src/interfaces/odbc/convert.c

src/interfaces/odbc/dlg_specific.c

src/interfaces/odbc/dlg_specific.h

src/interfaces/odbc/drvconn.c

src/interfaces/odbc/environ.c

src/interfaces/odbc/execute.c

src/interfaces/odbc/gpps.c

src/interfaces/odbc/gpps.h

src/interfaces/odbc/info.c

src/interfaces/odbc/lobj.c

src/interfaces/odbc/misc.c

src/interfaces/odbc/misc.h

src/interfaces/odbc/options.c

src/interfaces/odbc/parse.c

src/interfaces/odbc/pgtypes.c

src/interfaces/odbc/pgtypes.h

src/interfaces/odbc/psqlodbc.h