D27429: ThreadWeaver: Convert license headers to SPDX expressions

[Christophe Giboudeaux]

cgiboudeaux accepted this revision.

REPOSITORY
  R279 ThreadWeaver

BRANCH
  spdxHeaders

REVISION DETAIL
  https://phabricator.kde.org/D27429

To: cordlandwehr, cgiboudeaux
Cc: cgiboudeaux, kde-frameworks-devel, mirko, LeGast00n, cblack, GB_2, 
michaelh, ngraham, bruns