[Libvir] [PATCH] Miscellaneous cleanups for virNodeGetFreeMemory and virNodeGetCellsFreeMemory

(1) Add documentation to the hvsupport page for virNodeGetFreeMemory (2) Fix documentation on the hvsupport page to show that the two new functions aren't supported in the QEMU, KVM or remote cases yet. (3) Add DEBUG() calls to both new functions. (4) xen_internal.c functions may now support a connection argument to virXenError / virXenErrorFunc. I have modified this file so that where the connection is known, it is passed. Because of the way virterror works, errors should always be attached to a connection if at all possible, otherwise there is no sane way to turn non-connection errors into exceptions in language bindings, and also error handling in threaded code won't work. Rich. -- Emerging Technologies, Red Hat - http://et.redhat.com/~rjones/ Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 03798903