[pcp] Resolve build deps and specfile macro on el5/6

[nathans]

commit 6d32cd73cdb71c65bbd7ea05a972ec7437be3d15
Author: Nathan Scott <nathans at redhat.com>
Date:   Mon Dec 1 15:48:13 2014 +1100

    Resolve build deps and specfile macro on el5/6

 pcp.spec |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/pcp.spec b/pcp.spec
index 87909f2..0dcd69c 100644
--- a/pcp.spec
+++ b/pcp.spec
@@ -16,7 +16,11 @@ Source1: pcp-webjs.src.tar.gz
 %{!?disable_perfevent: %global disable_perfevent 1}
 %else
 %{!?disable_papi: %global disable_papi 0%{?rhel} < 6}
-%{!?disable_perfevent: %global disable_perfevent 0%{?rhel} < 7}
+%if 0%{?fedora} >= 20 || 0%{?rhel} > 6
+%define disable_perfevent 0
+%else
+%define disable_perfevent 1
+%endif
 %endif
 
 %define disable_microhttpd 0