Added lib64 install paths for gettext on redhat

(cherry picked from commit 24ea12840a02eda12d1bb5176ef9fe9724f0064b)
Signed-off-by: Guy Rozendorn <guy@rzn.co.il>
Issue #2: openssl ignores LDFLAGS, and therefore has an rpath that does not contain $ORIGIN/../lib
Issue #3: purge_sysconfigdata: using Python2.6-compatible string formatting