Issue #6715: Add module for compression using the LZMA algorithm.
diff --git a/PCbuild/pyproject.vsprops b/PCbuild/pyproject.vsprops
index 4eab942..441f95f 100644
--- a/PCbuild/pyproject.vsprops
+++ b/PCbuild/pyproject.vsprops
@@ -57,6 +57,10 @@
 		Value="$(externalsDir)\bzip2-1.0.5"

 	/>

 	<UserMacro

+		Name="lzmaDir"

+		Value="$(externalsDir)\xz-5.0.3"

+	/>

+	<UserMacro

 		Name="opensslDir"

 		Value="$(externalsDir)\openssl-1.0.0a"

 	/>