Added .pp extension.

Author: Lastique

.gitattributes

@@ -91,6 +91,7 @@ TODO         text svneol=native#text/plain
 *.h          text svneol=native#text/plain
 *.hpp        text svneol=native#text/plain
 *.ipp        text svneol=native#text/plain
+*.pp         text svneol=native#text/plain
 *.tpp        text svneol=native#text/plain
 *.jam        text svneol=native#text/plain
 *.java       text svneol=native#text/plain