iis-installer: Adds IIS 10 on the suported list

As reported on issue #931 the installer was marking ModSecurity as incompatible
with IIS 10.

CHANGES

@@ -1,6 +1,8 @@
 DD mmm YYYY - X.Y.Z (To be released)
 ------------------------------------
 
+ * Understands IIS 10 as compatible on Windows installer.
+   [Issue #931 - Anton Serbulov, Pavel Vasilevich and ModSecurity team]
  * Fix apache logging limitation by using correct apache call.
    [Issue #840 - Christian Folini]
  * Fix apr_crypto.h check on 32-bit Linux platform

iis/installer.wxs

@@ -91,7 +91,7 @@
             <RegistrySearch Id="FindInetPubFolder" Root="HKLM" Key="SOFTWARE\Microsoft\InetStp" Name="PathWWWRoot" Type="directory" />
         </Property>
         <Property Id="MSIUSEREALADMINDETECTION" Value="1" />
-        <Condition Message="This setup requires IIS 7.0 or 8.0."><![CDATA[(IIS="#7") OR (IIS="#8")]]></Condition>
+        <Condition Message="This setup requires IIS 7.0 or 8.0."><![CDATA[(IIS="#7") OR (IIS="#8") OR (IIS="#10")]]></Condition>
         <!-- Version 2.7.5 had an uninstall issue that leaves some files behind. Asking the user to manually hash this out. -->
         <Condition Message="A older version of ModSecurityIIS was found in your computer. Please complete uninstall by removing the following file: [FILEEXISTS]. You may have to remove ModSecurity module from IIS, use the IIS Manager to do so."><![CDATA[(NOT FILEEXISTS) OR (Installed)]]></Condition>
         <Condition Message="64-bit operating system was detected, please use the 64-bit installer.">