Issue #3585: Add pkg-config support.

It creates a python-2.7.pc file and a python.pc symlink in the
$(LIBDIR)/pkgconfig directory. Patch by Clinton Roy.
diff --git a/Misc/ACKS b/Misc/ACKS
index 64a0242..ee25ad1 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -618,6 +618,7 @@
 Donald Wallace Rouse II
 Liam Routt
 Craig Rowland
+Clinton Roy
 Paul Rubin
 Sam Ruby
 Audun S. Runde