Allow removing things from this config. Still a ridiculously inefficient solution, of course.

flips-gtk.cpp

@@ -1,6 +1,6 @@
 //Module name: Floating IPS, GTK+ frontend
 //Author: Alcaro
-//Date: See Git timestamps
+//Date: See Git history
 //Licence: GPL v3.0 or higher
 
 //List of assumptions made whose correctness is not guaranteed by GTK+:

flips.cpp

@@ -251,7 +251,7 @@ void config::set(LPCWSTR name, LPCWSTR value)
 		if (!wcscmp(name, this->names[i]))
 		{
 			free(this->values[i]);
-			this->values[i] = wcsdup(value);
+			this->values[i] = (value!=NULL ? wcsdup(value) : NULL);
 			return;
 		}
 	}
@@ -292,7 +292,10 @@ LPWSTR config::flatten()
 	at += wsprintf(at, "%s", header);
 	for (size_t i=0;i<this->numentries;i++)
 	{
-		at += wsprintf(at, "%s=%s\n", this->names[i], this->values[i]);
+		if (this->values[i]!=NULL)
+		{
+			at += wsprintf(at, "%s=%s\n", this->names[i], this->values[i]);
+		}
 	}
 	
 	return ret;

flips.h

@@ -1,6 +1,6 @@
 //Module name: Floating IPS, header for all frontends
 //Author: Alcaro
-//Date: June 18, 2015
+//Date: See Git history
 //Licence: GPL v3.0 or higher
 
 //Preprocessor switch documentation:
@@ -69,9 +69,9 @@
 #include <ctype.h>
 
 //Flips uses Windows type names internally, since it's easier to #define them to Linux types than
-//defining "const char *" to anything else. Inventing my own typedefs seems counterproductive as
-//well; they would bring no advantage over Windows typenames except not being Windows typenames, and
-//I don't see that as a valid argument.
+//defining "const char *" to anything else. I could invent my own typedefs, but the only advantage
+//that would bring over Windows types would be not being Windows types, and I don't see that as a
+//valid argument.
 
 #define LPCWSTR const char *
 #define LPWSTR char *

global.h

@@ -1,6 +1,6 @@
 //Module name: Floating IPS, global header
 //Author: Alcaro
-//Date: June 18, 2015
+//Date: See Git history
 //Licence: GPL v3.0 or higher
 
 #ifndef struct_mem