* gnu/packages/calendar.scm (khal): Update to 0.9.8.
[arguments]: Make sure to stop building if the documentation fails to
build. Skip some failing tests.
Reported by sadiq on IRC.
* gnu/packages/calendar.scm (libical)[arguments]: Remove configure flag
adding /lib64 to rpath, add flag to force libdir to /lib.
* gnu/packages/patches/khal-disable-failing-tests.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/calendar.scm (khal): Use it.
The old one was plain wrong and only worked by luck since the old
python build system did manipulate PYTHONPATH.
* gnu/packages/calendar.scm(khal)[phase manpage]: Use
add-installed-pythonpath.