significant changes in code to handle import/embedding - much cleaner and less code, plus the import progress bar now works; unify response handling for Gtkmm2ext::Choice

git-svn-id: svn://localhost/trunk/ardour2@415 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/pbd3/pthread_utils.cc

@@ -26,8 +26,6 @@
 #include <pbd/pthread_utils.h>
 
 using std::string;
-using std::cerr;
-using std::endl;
 
 typedef std::map<string,pthread_t> ThreadMap;
 static ThreadMap all_threads;