D25002: disable bug report when there are signs of an update

[Harald Sitter]

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REVISION SUMMARY
  this actually improves UX more than anything. when there was an update it
  is fairly impossible to install debug symbols, so drkonqi may get stuck in
  a loop between saying this crash is garbage and suggesting the user install
  some more symbols. what's more is that the crash can be the result
  of incompatibilities in runtime-loaded plugins (a notorious example are
  KIO slaves, which get forked from klauncher which I think can lead
  to problems when loading the newer libQt5Core.so etc.).
  
  all in all crashes coming from a half-update runtime are hard to trace
  and also at risk of being worthless. so, instead disable the report and
  the install symbols features and inform the user about what
  went wrong in both cases.
  
  this is pretty much exclusively working for linux where the kernel will
  actually add " (deleted)" hints to all symlinks in procfs and have a
  map_files directory where all mmap'd regions are symlinked to their
  respective paths... also with that suffix as needed.
  
  the way it works is super easy: iter all map_files, get all deleted paths,
  make sure none of the .so or the executable itself are marked deleted.
  if anything is marked deleted, the report feature gets disabled

TEST PLAN
  update dolphin -> attach drkonqi -> drkonqi whines about dolphin being updated

REPOSITORY
  R871 DrKonqi

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D25002

AFFECTED FILES
  src/backtracewidget.cpp
  src/crashedapplication.cpp
  src/crashedapplication.h
  src/drkonqibackends.cpp
  src/drkonqidialog.cpp

To: sitter, #plasma
Cc: plasma-devel, LeGast00n, The-Feren-OS-Dev, jraleigh, fbampaloukas, GB_2, ragreen, ZrenBot, ngraham, alexeymin, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, ahiemstra, mart
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