Get toxcore commit from app script

src/freedombone-image-customise

 function mesh_tox_node {
 	# obtain commits from the main file
 	if [ -f /usr/local/bin/${PROJECT_NAME} ]; then
-		TOXCORE_COMMIT_MAIN=$(cat /usr/local/bin/${PROJECT_NAME} | grep "TOXCORE_COMMIT=" | head -n 1 | awk -F "'" '{print $2}')
+		TOXCORE_COMMIT_MAIN=$(cat /usr/local/bin/${PROJECT_NAME}-app-tox | grep "TOXCORE_COMMIT=" | head -n 1 | awk -F "'" '{print $2}')
 	else
-		TOXCORE_COMMIT_MAIN=$(cat /usr/bin/${PROJECT_NAME} | grep "TOXCORE_COMMIT=" | head -n 1 | awk -F "'" '{print $2}')
+		TOXCORE_COMMIT_MAIN=$(cat /usr/bin/${PROJECT_NAME}-app-tox | grep "TOXCORE_COMMIT=" | head -n 1 | awk -F "'" '{print $2}')
 	fi
 	if [ ${#TOXCORE_COMMIT_MAIN} -gt 10 ]; then
 		TOXCORE_COMMIT=$TOXCORE_COMMIT_MAIN