Added -disable-constants-check, -skip-added-constants and -skip-removed-constants options. Improved SysCheck.pm module. Move to secure HTTPS.
diff --git a/abi-compliance-checker.pl b/abi-compliance-checker.pl
index 0dece16..40033c4 100644
--- a/abi-compliance-checker.pl
+++ b/abi-compliance-checker.pl
@@ -92,7 +92,8 @@
 $CheckInfo, $Quick, $AffectLimit, $AllAffected, $CxxIncompat,
 $SkipInternalSymbols, $SkipInternalTypes, $TargetArch, $GccOptions,
 $TypesListPath, $SkipTypesListPath, $CheckPrivateABI, $CountSymbols, $OldStyle,
-$DisableQuickEmptyReport, $SkipTypedefUncover, $MinGWCompat, $SkipUnidentified);
+$DisableQuickEmptyReport, $SkipTypedefUncover, $MinGWCompat, $SkipUnidentified,
+$DisableConstantsCheck, $SkipAddedConstants, $SkipRemovedConstants);
 
 my $CmdName = get_filename($0);
 my %OS_LibExt = (
@@ -145,7 +146,10 @@
     "Empty_Set"=>11
 );
 
-my $HomePage = "http://lvc.github.io/abi-compliance-checker/";
+my %HomePage = (
+    "Dev"=>"https://github.com/lvc/abi-compliance-checker",
+    "Wiki"=>"https://lvc.github.io/abi-compliance-checker/"
+);
 
 my $ShortUsage = "ABI Compliance Checker (ABICC) $TOOL_VERSION
 A tool for checking backward compatibility of a C/C++ library API
@@ -200,6 +204,9 @@
   "types-list=s" => \$TypesListPath,
   "skip-symbols=s" => \$SkipSymbolsListPath,
   "skip-types=s" => \$SkipTypesListPath,
+  "disable-constants-check!" => \$DisableConstantsCheck,
+  "skip-added-constants!" => \$SkipAddedConstants,
+  "skip-removed-constants!" => \$SkipRemovedConstants,
   "headers-list=s" => \$TargetHeadersPath,
   "skip-headers=s" => \$SkipHeadersPath,
   "header=s" => \$TargetHeader,
@@ -471,6 +478,9 @@
   -skip-types PATH
       The list of types that should not be checked.
 
+  -disable-constants-check
+      Do not check for changes in constants.
+      
   -headers-list PATH
       The file with a list of headers, that should be checked/dumped.
       
@@ -805,7 +815,8 @@
     non-zero - Incompatible or the tool has run with errors.
 
 MORE INFORMATION:
-    ".$HomePage."\n");
+    ".$HomePage{"Wiki"}."
+    ".$HomePage{"Dev"}."\n\n";
 }
 
 my %Operator_Indication = (
@@ -17948,7 +17959,7 @@
     
     $Footer .= "<hr/>\n";
     $Footer .= "<div class='footer' align='right'>";
-    $Footer .= "<i>Generated by <a href='".$HomePage."'>ABI Compliance Checker</a> $TOOL_VERSION &#160;</i>\n";
+    $Footer .= "<i>Generated by <a href='".$HomePage{"Dev"}."'>ABI Compliance Checker</a> $TOOL_VERSION &#160;</i>\n";
     $Footer .= "</div>\n";
     $Footer .= "<br/>\n";
     
@@ -18343,9 +18354,12 @@
         
         if(not defined $Constants{2}{$Constant}{"Value"})
         { # removed
-            %{$CompatProblems_Constants{$Level}{$Constant}{"Removed_Constant"}} = (
-                "Target"=>$Constant,
-                "Old_Value"=>$Old_Value  );
+            if(not defined $SkipRemovedConstants)
+            {
+                %{$CompatProblems_Constants{$Level}{$Constant}{"Removed_Constant"}} = (
+                    "Target"=>$Constant,
+                    "Old_Value"=>$Old_Value  );
+            }
             next;
         }
         
@@ -18396,6 +18410,10 @@
         }
     }
     
+    if(defined $SkipAddedConstants) {
+        return;
+    }
+    
     foreach my $Constant (keys(%{$Constants{2}}))
     {
         if(not defined $Constants{1}{$Constant}{"Value"})
@@ -22816,8 +22834,12 @@
     }
     
     mergeSymbols($Level);
-    if(keys(%{$CheckedSymbols{$Level}})) {
-        mergeConstants($Level);
+    
+    if(not defined $DisableConstantsCheck)
+    {
+        if(keys(%{$CheckedSymbols{$Level}})) {
+            mergeConstants($Level);
+        }
     }
     
     $Cache{"mergeTypes"} = (); # free memory
@@ -22865,6 +22887,7 @@
     "NoStdInc"=>$NoStdInc,
     "CxxIncompat"=>$CxxIncompat,
     "SkipUnidentified"=>$SkipUnidentified,
+    "DisableConstantsCheck"=>$DisableConstantsCheck,
     
     "BinaryOnly" => $BinaryOnly,
     "SourceOnly" => $SourceOnly