remote-user: Fix .conf migration in %post

If the remote-user auth plug-in is installed but is not enabled at the
time of an upgrade, its httpd configuration file may not be present.  In
order to avoid causing an error during a package upgrade, only modify
the file if it is present.
Bug 971586

Set up cron's PATH to use primary cartridge's *_PATH_ELEMENT so that
cron can use the cartridge's executables.
Mimic rhcsh logic more closely

Ensure the primary cartridge's *_PATH_ELEMENT wins
haproxy_ctld_daemon.rb: Fix backtrace option

The haproxy_ctld_daemon.rb script in the haproxy cartridge had a typo:
':backgrace' instead of ':backtrace'.

This typo appears to have been present since haproxy_ctld_daemon.rb was
introduced in commit ee8cebbe1adb351a3b80ca3fda4f047aee8fac1b.
openshift_facts.rb: sort cart_list
Use OPENSHIFT_*_DIR in standalone.conf

In the JBoss cartridges' standalone.conf file, use OPENSHIFT_JBOSSAS_DIR
or OPENSHIFT_JBOSSEAP_DIR as appropriate to set the value of CART_DIR.
oo-accept-broker: check httpd_execmem

Add httpd_execmem to the list of Booleans that check_selinux_booleans
checks.
process_templates need to be String literals
bin/* needs to be executable
Mention EOL chacacters
Mention chmod.
Add Windows-friendly instructions
Application's action hooks follow the same semantics as cartridge control scripts
A typo
Add sections for readability
Minor tweak in wording
Support running broker tests directly
Force scopes to use checked ids and avoid symbolizing arbitrary strings
Use .present? instead of .count > 0 (for performance)
Handle ValidationExceptions globally
Support LIST_DOMAINS_BY_OWNER, SHOW_DOMAIN, and SHOW_APPLICATION_BY_DOMAIN
Simplify capabilities to be more model like, and support clean proxying of inherited properties
Return creation_time on domains