Eliminated "handled" field in Parser::Action

This field was used during development to measure the
coverage of the ANSI terminal parser against typical
terminal input sequences.

The "handled" field has not been read by any code since
commit 1ee54cd7 (February 2011). Eliminating the field
by popular request (closes #723).

src/terminal/terminaldispatcher.cc

@@ -54,7 +54,6 @@ void Dispatcher::newparamchar( const Parser::Param *act )
   if ( params.length() < 100 ) {
     /* enough for 16 five-char params plus 15 semicolons */
     params.push_back( act->ch );
-    act->handled = true;
   }
   parsed = false;
 }
@@ -65,16 +64,14 @@ void Dispatcher::collect( const Parser::Collect *act )
   if ( ( dispatch_chars.length() < 8 ) /* never should need more than 2 */
        && ( act->ch <= 255 ) ) {  /* ignore non-8-bit */    
     dispatch_chars.push_back( act->ch );
-    act->handled = true;
   }
 }
 
-void Dispatcher::clear( const Parser::Clear *act )
+void Dispatcher::clear( const Parser::Clear *act __attribute((unused)) )
 {
   params.clear();
   dispatch_chars.clear();
   parsed = false;
-  act->handled = true;
 }
 
 void Dispatcher::parse_params( void )
@@ -228,7 +225,6 @@ void Dispatcher::dispatch( Function_Type type, const Parser::Action *act, Frameb
     fb->ds.next_print_will_wrap = false;
     return;
   } else {
-    act->handled = true;
     if ( i->second.clears_wrap_state ) {
       fb->ds.next_print_will_wrap = false;
     }
@@ -241,14 +237,12 @@ void Dispatcher::OSC_put( const Parser::OSC_Put *act )
   assert( act->char_present );
   if ( OSC_string.size() < 256 ) { /* should be a long enough window title */
     OSC_string.push_back( act->ch );
-    act->handled = true;
   }
 }
 
-void Dispatcher::OSC_start( const Parser::OSC_Start *act )
+void Dispatcher::OSC_start( const Parser::OSC_Start *act __attribute((unused)) )
 {
   OSC_string.clear();
-  act->handled = true;
 }
 
 bool Dispatcher::operator==( const Dispatcher &x ) const