tools/kvm_stat: Misc Patches

Assortment of various fixes and improvements for the kvm_stat utility. Patches 1-5 are bugfixes.
Patch 6 provides full PEP8 compliance by inserting the required empty lines. It is included as an extra for easy disposal, since that kind of patch might be a bit controversial.
There are some subtle aspects regarding patch 7, as its effects might differ per platform. However, I didn't notice any negative effects, only improvements.
Patch 8 is a simple doc update.
Patches 9-13 provide usability improvements.
Patches 14-17 add new features.

Changes in v2:
- 04/17: Removed chunk that eliminated the only once used libc variable,

         and changed '3.' -> '3.0'

- 07/17: Changed '3.' -> '3.0'
- 16/17: Fixed accidental removal of description for interactive command 'x'

Stefan Raspl (17):
tools/kvm_stat: hide cursor
tools/kvm_stat: catch curses exceptions only tools/kvm_stat: handle SIGINT in log and batch modes tools/kvm_stat: fix misc glitches
tools/kvm_stat: fix trace setup glitch on field updates in
TracepointProvider
tools/kvm_stat: full PEP8 compliance
tools/kvm_stat: reduce perceived idle time on filter updates tools/kvm_stat: document list of interactive commands tools/kvm_stat: display guest name when using pid filter tools/kvm_stat: remove pid filter on empty input tools/kvm_stat: print error messages on faulty pid filter input tools/kvm_stat: display regex when set to non-default tools/kvm_stat: remove regex filter on empty input tools/kvm_stat: add option '--guest'
tools/kvm_stat: add interactive command 'c' tools/kvm_stat: add interactive command 'r' tools/kvm_stat: add '%Total' column

 tools/kvm/kvm_stat/kvm_stat     | 381 +++++++++++++++++++++++++++++++++-------
 tools/kvm/kvm_stat/kvm_stat.txt |  26 +++
 2 files changed, 343 insertions(+), 64 deletions(-)

2.8.4