Add pkgconfig to Thrift C++ libraries

Reviewed By: mcslee

Other Notes: Submitted by Ben Maurer


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665377 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/cpp/cleanup.sh b/lib/cpp/cleanup.sh
index 687b376..b4cc4c6 100755
--- a/lib/cpp/cleanup.sh
+++ b/lib/cpp/cleanup.sh
@@ -29,4 +29,7 @@
 Makefile.in \
 missing \
 config.hin~ \
-stamp-h1
+stamp-h1 \
+thrift.pc \
+thrift-nb.pc \
+thrift-z.pc