pcp

Support configure --libexecdir for $PCP_BINADM_DIR

Adds support for PCP_BINADM_DIR=/usr/libexec/pcp/bin on platforms that
use libexec, and use it explicitly in the Fedora RPM spec, where we
now also make use the %{_libexecdir} RPM macro.

This whole section of configure.in could do with some simplification
and rationalization, but that's not the intent of this commit.

modified:   CHANGELOG
modified:   build/rpm/pcp_fedora.spec
modified:   configure.in
modified:   src/include/pcp.conf.in

Signed-off-by: Mark Goodwin mgoodwin@redhat.com