IDE: Remove the "Ignore" option for uninstalling dependent packages. Fix the "Cancel" option.

packager/installpkgsetdlg.pas

@@ -532,7 +532,7 @@ var
   i: Integer;
 begin
   for i:=0 to NewInstalledPackages.Count-1 do
-    if SysUtils.CompareText(TLazPackageID(NewInstalledPackages[i]).Name,PkgName)=0 then
+    if CompareText(TLazPackageID(NewInstalledPackages[i]).Name,PkgName)=0 then
       exit(true);
   Result:=false;
 end;
@@ -742,6 +742,12 @@ begin
 
     Result:=PackageEditingInterface.CheckInstallPackageList(
                     FNewInstalledPackages,UninstallPkgs,[piiifRemoveConflicts]);
+    if not Result then begin
+      AssignOldInstalledPackagesToList;  // Restore the old list.
+      UpdateNewInstalledPackages;
+      UpdateAvailablePackages(True);
+      UpdateButtonStates;
+    end;
   finally
     UninstallPkgs.Free;
   end;

packager/pkgmanager.pas

@@ -5841,14 +5841,13 @@ begin
         if s='' then continue;
         case IDEQuestionDialog(lisUninstallFail,
            Format(lisThePackageIsUsedBy, [APackage.IDAsString])+sLineBreak +s,
-           mtConfirmation, [mrYes, lisUninstallThemToo, mrIgnore, mrCancel]
+           mtConfirmation, [mrYes, lisUninstallThemToo, mrCancel]
            ) of
         mrYes:
           begin
             for j:=0 to Dependencies.Count-1 do
               DeleteDependency(TPkgDependency(Dependencies[j]));
           end;
-        mrIgnore: ;
         else
           exit(false);
         end;