Move postgresql header files to the src directory

They are private, and anyways no client needs to include anything at all
from the various backends.

include/backends/postgresql/db/settings.hpp

@@ -1,34 +0,0 @@
-/* Copyright 2015, 2016, Michele Santullo
- * This file is part of "dindexer".
- *
- * "dindexer" is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * "dindexer" is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with "dindexer".  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef idC895D12FEB324387A37FF631E0C09560
-#define idC895D12FEB324387A37FF631E0C09560
-
-#include <string>
-#include <cstdint>
-
-namespace dindb {
-	struct Settings {
-		std::string address;
-		std::string username;
-		std::string password;
-		std::string dbname;
-		uint16_t port;
-	};
-} //namespace dindb
-
-#endif

src/backends/postgresql/CMakeLists.txt

@@ -9,9 +9,6 @@ add_library(${PROJECT_NAME} SHARED
 	backend_postgresql.cpp
 )
 
-target_include_directories(${PROJECT_NAME}
-	PUBLIC ${DINDEXER_PUB_INCLUDE_DIR}/backends/postgresql
-)
 target_include_directories(${PROJECT_NAME} SYSTEM
 	PUBLIC ${Boost_INCLUDE_DIRS}
 )