Support old Glibmm only with libstdc++.

src/local_glibmm.h

@@ -16,31 +16,12 @@ Copyright:
 // Glibmm before 2.50.1 uses throw(...) exception specifications which are invalid in C++17.
 // Try to work around that.
 #ifdef APP_GLIBMM_USES_THROW
-	// include stdlib, to avoid throw() macro errors there.
-	#include <typeinfo>
-	#include <bitset>
-	#include <functional>
-	#include <utility>
-	#include <new>
-	#include <memory>
-	#include <limits>
-	#include <exception>
-	#include <stdexcept>
-	#include <string>
-	#include <vector>
-	#include <deque>
-	#include <list>
-	#include <set>
-	#include <map>
-	#include <stack>
-	#include <queue>
-	#include <algorithm>
-	#include <iterator>
-	#include <ios>
-	#include <iostream>
-	#include <fstream>
-	#include <sstream>
-	#include <locale>
+	#if !__has_include(<bits/stdc++.h>)
+		#error "This version of GLibmm is incompatible with C++17. Use GLibmm 2.50.1 or later."
+	#endif
+
+	// include complete stdlib, to avoid throw() macro errors there.
+	#include <bits/stdc++.h>  // libstdc++ only
 
 	#define throw(a)  // glibmm uses dynamic exception specifications, remove them.
 		#include <glibmm.h>