v0.11.7

Fixes

• qa-sed: do not test -e individually if they can't function that way,
  e.g. when using sed labels (unfortunately means this can't tell if each
  separate use of labels replaced something)

• qa-sed: avoid occasional incorrect modification when expression testing
  failed but normal sed command didn't resulting in sed being run multiple
  times by the error handler (currently only known affected case is
  sys-apps/shadow[pam] login.defs superfluous comments, this is further
  fixed given doesn't error out with sed labels anymore)