fix iOS recovery handler

PanoPainter/main.cpp

@@ -11,7 +11,7 @@
 #include "objc_utils.h"
 
 int main(int argc, char * argv[]) {
-    //install_global_handlers();
+    install_global_handlers();
     @autoreleasepool {
         return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
     }

src/objc_utils.cpp

@@ -111,6 +111,14 @@ void install_global_handlers()
     signal(SIGFPE, signal_handler);
     signal(SIGBUS, signal_handler);
     signal(SIGPIPE, signal_handler);
+    
+    signal(SIGQUIT, signal_handler);
+    signal(SIGTRAP, signal_handler);
+    signal(SIGEMT, signal_handler);
+    signal(SIGSYS, signal_handler);
+    signal(SIGALRM, signal_handler);
+    signal(SIGXCPU, signal_handler);
+    signal(SIGXFSZ, signal_handler);
 
 /*
     struct sigaction mySigAction;