Re: [libvirt] [PATCH] Add virsh commands for virInterface* functions - Take 2

This is a resubmission of the virsh commands to expose virInterface* functionality. I've made the following changes from the original: 1) command names changed from if-* to iface-* 2) "if-create" is now "iface-start" 3) iface-edit implementation is manually included directly in virsh.c rather than being generated with a makefile rule. 4) iface-list now has options --inactive and --all, similar to net-list. (4) depends on new functions contained in the patch I submitted yesterday. All of this builds and appears to be correct, but is non-functional until either the netcf backend or test driver backend is committed. The netcf backend is waiting on something in netcf to provide the functionality required for virConnectListDefinedInterfaces(), and the test driver is waiting on XML parsing/formatting functions (and needs a small amount of rework to support inactive interfaces).