Migration: fix app paths

lib/migrate.php

@@ -64,7 +64,7 @@ class OC_Migrate{
 		$apps = OC_App::getAllApps();
 
 		foreach($apps as $app){
-			$path = self::getAppPath($app) . '/appinfo/migrate.php';
+			$path = OC_App::getAppPath($app) . '/appinfo/migrate.php';
 			if( file_exists( $path ) ){
 				include( $path );
 			}
@@ -398,7 +398,7 @@ class OC_Migrate{
 			if( OC_App::isEnabled( $provider->getID() ) ){
 				$success = true;
 				// Does this app use the database?
-				if( file_exists( self::getAppPath($provider->getID()).'/appinfo/database.xml' ) ){
+				if( file_exists( OC_App::getAppPath($provider->getID()).'/appinfo/database.xml' ) ){
 					// Create some app tables
 					$tables = self::createAppTables( $provider->getID() );
 					if( is_array( $tables ) ){
@@ -539,7 +539,7 @@ class OC_Migrate{
 		}
 
 		// There is a database.xml file
-		$content = file_get_contents(self::getAppPath($appid) . '/appinfo/database.xml' );
+		$content = file_get_contents(OC_App::getAppPath($appid) . '/appinfo/database.xml' );
 
 		$file2 = 'static://db_scheme';
 		// TODO get the relative path to migration.db from the data dir