D22805: set autorcc by default

[Harald Sitter]

sitter edited the summary of this revision.

REPOSITORY
  R240 Extra CMake Modules

REVISION DETAIL
  https://phabricator.kde.org/D22805

To: sitter
Cc: apol, kde-frameworks-devel, kde-buildsystem, LeGast00n, sbergeron, 
bencreasy, michaelh, ngraham, bruns