tools/virsh-pool.c:
  * vshStoragePoolSorter to sort the pool list by pool name.

  * struct vshStoragePoolList to present the pool list, pool info
    is collected by list->poolinfo if 'details' is specified by
    user.

  * vshStoragePoolListFree to free the pool list

  * vshStoragePoolListCollect to collect the pool list, new API
    virStorageListAllPools is tried first, if it's not supported,
    fall back to older APIs.

  * New options --persistent, --transient, --autostart, --no-autostart
    and --type for pool-list. --persistent or --transient is to filter
    the returned pool list by whether the pool is persistent or not.
    --autostart or --no-autostart is to filter the returned pool list
    by whether the pool is autostarting or not. --type is to filter
    the pools by pool types. E.g.

    % virsh pool-list --all --persistent --type dir,disk

tools/virsh.pod:
   * Add documentations for the new options.

Now that vshCommandRun() checks for the connection automaticaly, remove
all of the redundant checks in the code.

vshConnectionUsability() no longer needs to be exported and this patch
marks it static.

More in a series of file splits.

* tools/virsh-pool.h: New file.
* tools/Makefile.am (virsh_SOURCES): Build it.
* tools/virsh.c: Use new header.
* tools/virsh-pool.c: Likewise.
(virCommandOptPoolBy): Fix flag usage.

Convert the exported items in virsh.h to use a common 'vsh' prefix.

* tools/virsh.h (VIRSH_MAX_XML_FILE): Rename...
(VSH_MAX_XML_FILE): ...and parenthesize.
(DIFF_MSEC, CTRL_CLOSE_BRACKET): Delete.
(vshUsage, vshInit, vshDeinit, vshParseArgv): Remove prototype.
(editWriteToTempFile, editFile, editReadBackFile, prettyCapacity)
(virshReportError): Rename...
(vshEditWriteToTempFile, vshEditFile, vshEditReadBackFile)
(vshPrettyCapacity, vshReportError): ...into vsh namespace.
(jobWatchTimeoutFunc): Move to virsh-domain.c.
* tools/virsh.c (vshCommandRun): Inline former DIFF_MSEC.
(main): Inline former CTRL_CLOSE_BRACKET.
(vshUsage, vshInit, vshDeinit, vshParseArgv): Make static.
(prettyCapacity, virshReportError, editWriteToTempFile, editFile):
Fix naming, and adjust usage.
(vshAskReedit, vshCommandRun, vshEventLoop, vshInit): Adjust
usage.
* tools/virsh-domain.c (cmdAttachDevice, cmdCPUCompare)
(cmdCPUBaseline, cmdCreate, cmdDefine, cmdDetachDevice)
(cmdUpdateDevice, cmdDesc, cmdUndefine, cmdStart, cmdVcpucount)
(cmdAttachDevice, cmdDomjobinfo): Likewise.
* tools/virsh-edit.c (do): Likewise.
* tools/virsh-interface.c (cmdInterfaceDefine): Likewise.
* tools/virsh-network.c (cmdNetworkCreate, cmdNetworkDefine):
Likewise.
* tools/virsh-nodedev.c (cmdNodeDeviceCreate): Likewise.
* tools/virsh-nwfilter.c (cmdNWFilterDefine): Likewise.
* tools/virsh-pool.c (cmdPoolCreate, cmdPoolDefine)
(cmdPoolDiscoverSources, cmdPoolList): Likewise.
* tools/virsh-secret.c (cmdSecretDefine): Likewise.
* tools/virsh-snapshot.c (cmdSnapshotCreate, vshSnapshotCreate)
(vshLookupSnapshot, cmdSnapshotEdit, cmdSnapshotCurrent)
(vshGetSnapshotParent): Likewise.
* tools/virsh-volume.c (cmdVolCreate, cmdVolCreateFrom)
(cmdVolInfo, cmdVolList): Likewise.

Virsh uses an error handler to save errors from libvirt. On some code
paths it's needed to clear libvirt errors and continue on fallback code
paths without reporting failure.

This patch adds function vshResetLibvirtError() that clears error
returned by libvirt and updates all places where the old two-line method
was used.

* virsh-domain-monitor.c: Add domMonitoringCmds
* virsh-domain.c: Add domManagementCmds
* virsh-host.c: Add hostAndHypervisorCmds
* virsh-interface.c: Add ifaceCmds
* virsh-network.c: Add networkCmds
* virsh-nodedev.c: Add nodedevCmds
* virsh-nwfilter.c: Add nwfilterCmds
* virsh-pool.c: Add storagePoolCmds
* virsh-secret.c: Add secretCmds
* virsh-snapshot.c: Add snapshotCmds
* virsh-volume.c: Add storageVolCmds
* virsh.c: Remove all the above *Cmds.

This splits commands of storage pool group into virsh-pool.c,
The helpers not for common use are moved too. Standard copyright
is added for the new file.

* tools/virsh.c:
  Remove commands for storage storage pool and a few helpers.
  (vshCommandOptVol, vshCommandOptVolBy).

* tools/virsh-pool.c:
  New file, filled with commands of storage pool group and its
  helpers.

* po/POTFILES.in:
  Add virsh-pool.c

* cfg.mk:
  Skip to check config.h including for virsh-pool.c