The following parameters are now available:
* hardeningDisable
To disable specific hardening flags
* hardeningEnable
To enable specific hardening flags
Only the cc-wrapper supports this right now, but these may be reused by
other wrappers, builders or setup hooks.
cc-wrapper supports the following flags:
* fortify
* stackprotector
* pie (disabled by default)
* pic
* strictoverflow
* format
* relro
* bindnow
Because:
1. It is a mere alias of `pythonPackages.sip`
2. It is usually not needed since propagated by `pyqt4`
3. It makes it easy to have a packages depend on two different versions
of sip
polkit-qt-1 is upgraded to the latest version, which supports Qt 5. The
attributes are also renamed to differentiate the Qt 4 and Qt 5
branches. The prior naming scheme differentiated between polkit-qt-1 and
polkit-qt, but we no longer package the latter.
