allow a request to be processed in a job

Now we allow a request to be passed into a job queue,
and after the job finishes the request is passed into
a controller again. In order to achieve this we have
a requests queue in System, when we put a request
to the job this Request structure is preserved in the
queue and for a new request a new Request is added to
the queue.

while here:
- remove App::Lock()/Unlock(), use scoped locking
- fix: Plugin now has a Call method which takes ModelConnector
  and a logger (used in multithreaded environment)
- BaseThread has a main_model_connector pointer
  to the main (from the main thread) model connector
- the FastCGI structure fcgi_request moved from App to Request
- some methods for handling requests moved from App to Request
- small refactoring in main.cpp
- add Http class (a http client)

winixd/Makefile

@@ -65,7 +65,7 @@ all: winix winix.so plugins
 
 
 winix: $(objfiles_main) winix.so
-	$(CXX) -o winix $(CXXFLAGS) $(LDFLAGS) $(objfiles_main) winix.so
+	$(CXX) -o winix $(CXXFLAGS) $(LDFLAGS) $(objfiles_main) winix.so -lcurl
 
 
 winix.so: $(objfiles_no_main)
@@ -73,7 +73,7 @@ winix.so: $(objfiles_no_main)
 	@cd ../../morm      ; $(MAKE) -e
 	@cd ../../ezc       ; $(MAKE) -e
 	@cd ../../tito      ; $(MAKE) -e
-	$(CXX) -shared -rdynamic -Wl,-whole-archive -o winix.so $(CXXFLAGS) $(objfiles_no_main) ../../pikotools/src/pikotools.a ../../morm/src/morm.a ../../ezc/src/ezc.a ../../tito/src/tito.a $(LDFLAGS) -lfcgi -lpq -lz -lpthread -lcurl -lmagic -Wl,-no-whole-archive
+	$(CXX) -shared -rdynamic -Wl,-whole-archive -o winix.so $(CXXFLAGS) $(objfiles_no_main) ../../pikotools/src/pikotools.a ../../morm/src/morm.a ../../ezc/src/ezc.a ../../tito/src/tito.a $(LDFLAGS) -lfcgi -lpq -lz -lpthread -lmagic -Wl,-no-whole-archive
 
 
 plugins: FORCE