Replace old PostODBC driver with new one...

This one is based on an older PostODBC driver, rewritten and maintained by
InsightDist(?)

src/interfaces/odbc/environ.h

@@ -0,0 +1,32 @@
+
+/* File:            environ.h
+ *
+ * Description:     See "environ.c"
+ *
+ * Comments:        See "notice.txt" for copyright and license information.
+ *
+ */
+
+#ifndef __ENVIRON_H__
+#define __ENVIRON_H__
+
+#include "psqlodbc.h"
+#include <windows.h>
+#include <sql.h>
+
+#define ENV_ALLOC_ERROR 1
+
+/**********		Environment Handle	*************/
+struct EnvironmentClass_ {
+	char *errormsg;
+	int errornumber;
+};
+
+/*	Environment prototypes */
+EnvironmentClass *EN_Constructor(void);
+char EN_Destructor(EnvironmentClass *self);
+char EN_get_error(EnvironmentClass *self, int *number, char **message);
+char EN_add_connection(EnvironmentClass *self, ConnectionClass *conn);
+char EN_remove_connection(EnvironmentClass *self, ConnectionClass *conn);
+
+#endif