Make it work with GTK+ 2.

--- otpCalc-0.97-orig/Makefile.in
+++ otpCalc-0.97/Makefile.in
@@ -3,8 +3,8 @@
 
 CC = @CC@
 DEFS = -DVERSION=\"$(VER)\" @DEFS@
-CFLAGS = -s -O3 -Wall -pipe `gtk-config --cflags`
-LIBS = `gtk-config --libs` @LIBS@
+CFLAGS = -s -O3 -Wall -pipe `pkg-config --cflags gtk+-2.0`
+LIBS = `pkg-config --libs gtk+-2.0` @LIBS@
 
 prefix = @prefix@
 exec_prefix = @exec_prefix@
--- otpCalc-0.97-orig/callbacks.c
+++ otpCalc-0.97/callbacks.c
@@ -236,7 +236,7 @@
 }
 
 
-void focus(GtkWidget *widget, gpointer data)
+gboolean focus(GtkWidget *widget, GdkEvent *event, gpointer data)
 {
 
 	static GdkAtom targets;
@@ -244,12 +244,12 @@
 
 
 	if (!autopaste)
-		return;
+		return FALSE;
 
 	targets = gdk_atom_intern("STRING", FALSE);
 
 	gtk_selection_convert(widget, GDK_SELECTION_PRIMARY, targets,
 			      GDK_CURRENT_TIME);
 
-
+	return FALSE;
 }
--- otpCalc-0.97-orig/gui.c
+++ otpCalc-0.97/gui.c
@@ -29,7 +29,7 @@
 GtkWidget *te_response;
 
 unsigned short hash;
-unsigned short newline = 1;
+unsigned short newline = 0;
 unsigned short autopaste = 1;
 
 int main(int argc, char *argv[])
@@ -147,7 +147,7 @@
 
 	/* Setup the menu bar... */
 	mb_top = gtk_menu_bar_new();
-	gtk_menu_bar_set_shadow_type(GTK_MENU_BAR(mb_top), GTK_SHADOW_NONE); 
+	/*gtk_menu_bar_set_shadow_type(GTK_MENU_BAR(mb_top), GTK_SHADOW_NONE);*/
 	gtk_table_attach(GTK_TABLE(ta_top), mb_top, 0, 3, 0, 1,
 			 (GtkAttachOptions)(GTK_FILL),
 			 (GtkAttachOptions)(0), 0, 0);
--- otpCalc-0.97-orig/utility.c
+++ otpCalc-0.97/utility.c
@@ -422,7 +422,7 @@
 			words[extract(message, 33, 11)],
 			words[extract(message, 44, 11)],
 			words[extract(message, 55, 11)],
-			(newline == 1) ? "\n" : NULL);
+			(newline == 1) ? "\n" : "");
 
 	return response;