remove packages listed twice, add newlines add the end of files
testcase_60_yum_update.py: further timeout increase
testcase_18_sshd.py: password authentication was allowed before 5.7
testcase_33_userdata.py: not applicable to RHEL5
testcase_25_uname.py: no /etc/sysconfig/kernel checks for RHEL5.5, 5.6
testcase_41_rh_amazon_rhui_client.py introduced
testcase_55_yum_group_install.py: add additional check for libstdc++-devel
testcase_80_no_avc_denials.py introduced
testcase_37_sshd_bug923996.py: not_applicabe for old RHELs
testcase_80_no_avc_denials.py: be a bit more picky