Added list of databases and roles.

Roles works for atleast 9.3 and up.

Reorganizing code for communicating with database.

src/Pgsql_Row.h

@@ -0,0 +1,31 @@
+#ifndef PGSQL_ROW_H
+#define PGSQL_ROW_H
+
+#include "Pgsql_Value.h"
+
+namespace Pgsql {
+
+	class Result;
+
+	/** \brief A reference to a specific row from a result.
+	 *
+	 * As it is a reference its contents won't be valid after its associated result has
+	 * been destroyed.
+	 */
+	class Row {
+	public:
+		Row(const Result &result, int row);
+		bool next();
+
+		bool operator==(const Row& rhs) const;
+		Value get(int col) const;
+		//Value get(const char *colname) const;
+		//bool get(int col, QString &s);
+	private:
+		const Result& m_result;
+		int m_row;
+	};
+
+} // end namespace Pgsql
+
+#endif // PGSQL_ROW_H