Allow co-located Xcode builds.

deanberris · deanberris · commit c20b57e436c2 · 2012-11-04T00:56:46.000+11:00
I'm adding the generated CMake artefacts to .gitignore so that Xcode
users who choose to self-host on the same development directory can do
so.
diff --git a/.gitignore b/.gitignore
@@ -10,3 +10,6 @@ libs/mime/test/mime-roundtrip
 bin/
 tests/
 _build
+CPP-NETLIB.*
+CMakeScripts/
+*.cmake
