[Fedora-packaging] cmake guideline update proposal

[Rex Dieter]

http://fedoraproject.org/wiki/PackagingDrafts/cmake

In short, adding to %cmake:
     -DINCLUDE_INSTALL_DIR=%{_includedir} \\\
     -DLIB_INSTALL_DIR=%{_libdir} \\\
     -DSYSCONF_INSTALL_DIR=%{_sysconfdir} \\\
     -DSHARE_INSTALL_PREFIX=%{_datadir}

Found these additions useful while working on kde4 packaging 
(SYSCONF_INSTALL_DIR in particular, since kde4's default was/is prefix/etc).

-- Rex