Restore HelpFileVersion for API docs

Author: bahusoid

build-common/common.xml

@@ -11,7 +11,7 @@
 	<!-- Path to the folder that contain the external assemblies -->
 	<property name="lib.dir" value="lib" dynamic="true" />
 
-  <!-- This is used only for build folder -->
+  <!-- This is used for build folder and also for "API Reference" docs (not active task, see doc/NHibernate.shfbproj.template) -->
   <target name="get-project-version">
     <xmlpeek
       file="${root.dir}/build-common/NHibernate.props"

default.build

@@ -2,7 +2,7 @@
 <project 
 	name="NHibernate" 
 	default="build"
-	xmlns="http://nant.sf.net/release/0.85-rc3/nant.xsd"
+	xmlns="http://nant.sf.net/release/0.90/nant.xsd"
 >
 
 	<property name="root.dir" value="." />

doc/NHibernate.shfbproj.template

@@ -23,6 +23,7 @@
     <FeedbackEMailLinkText>nhibernate team</FeedbackEMailLinkText>
     <HelpTitle>NHibernate API Reference</HelpTitle>
     <IndentHtml>False</IndentHtml>
+    <HelpFileVersion>${project.version}</HelpFileVersion>
     <DocumentationSources>
       <DocumentationSource sourceFile="${root.dir}/src/NHibernate/bin/${build.config}/net461/NHibernate.dll" />
       <DocumentationSource sourceFile="${root.dir}/src/NHibernate/bin/${build.config}/net461/Nhibernate.xml" />