Vendor import of expat 2.2.9

doc/reference.html

@@ -276,9 +276,11 @@ directions or Unix directions below.</p>
 
 <p>If you're using the GNU compiler under cygwin, follow the Unix
 directions in the next section. Otherwise if you have Microsoft's
-Developer Studio installed, then from Windows Explorer double-click on
-"expat.vcxproj" in the lib directory and build and install in the usual
-manner.</p>
+Developer Studio installed,
+you can use CMake to generate a <code>.sln</code> file, e.g.
+<code>
+cmake -G"Visual Studio 15 2017" -DCMAKE_BUILD_TYPE=RelWithDebInfo .
+</code>, and build Expat using <code>msbuild /m expat.sln</code> after.</p>
 
 <p>Alternatively, you may download the Win32 binary package that
 contains the "expat.h" include file and a pre-built DLL.</p>
@@ -2152,7 +2154,7 @@ function behavior. In order to have an effect this must be called
 before parsing has started. Returns 1 if successful, 0 when called
 after <code>XML_Parse</code> or <code>XML_ParseBuffer</code>.
 <p><b>Note:</b>This call is optional, as the parser will auto-generate 
-a new random salt value if no value has been set at the start of parsing.
+a new random salt value if no value has been set at the start of parsing.</p>
 <p><b>Note:</b>One should not call <code>XML_SetHashSalt</code> with a
 hash salt value of 0, as this value is used as sentinel value to indicate
 that <code>XML_SetHashSalt</code> has <b>not</b> been called. Consequently