pcp updates - fix for rpm versions before 4.6

[Ken McDonell <kenj@xxxxxxxxxxxxxxxx>]

This fixes the build for our ia64 and suse test machine.

Changes committed to git://oss.sgi.com/kenj/pcp.git dev

 build/rpm/GNUmakefile     |    6 +++-
 build/rpm/get_rpm_version |   66 
++++++++++++++++++++++++++++++++++++++++++++++
 build/rpm/pcp.spec.in     |    4 ++
 3 files changed, 75 insertions(+), 1 deletion(-)

commit 0b967667eda32ee970868864d0ae726ac94d6475
Author: Ken McDonell <kenj@xxxxxxxxxxxxxxxx>
Date:   Sat Jun 28 07:13:31 2014 +1000

    Fix rpm builds for rpm versions prior to 4.6

    For the pcp-doc package, conditionally exclude
    BuildArch: noarch
    if the rpm version is not 4.6 or later.