[gtk] (17 commits) Non-fast-forward update to branch curve-ops

[Matthias Clasen <matthiasc src gnome org>]

The branch 'curve-ops' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  d216991... path: Add GskCurve
  0467edb... XXX: Fix pathop includes
  dafe5c2... Add curve eval tests
  843b380... Add gsk_curve_get_{start,end}_tangent
  5db10d7... Add curve tangent tests
  2bdbc2d... Add gsk_curve_get_tight_bounds
  807d68c... Add gsk_curve_get_bounds
  5345b1a... Add a curve bounds test
  b362348... Implement gsk_conic_curve_split
  1d7512b... Add gsk_curve_intersect
  576255e... Add curve intersection tests
  122f5e6... Add curve split tests
  bf22a92... Add a performance test for curve intersection
  d33a184... Add a separate case for curve-curve intersection
  3c60c97... Add a performance test for curve eval

Commits added to the branch:

  0924b57... path: Add GskCurve (*)
  45c5e3a... testsuite: Add conics to the random paths (*)
  42f02fc... XXX: Fix pathop includes
  b09bebb... Add curve eval tests
  bd5853f... Add gsk_curve_get_{start,end}_tangent
  ba12c6a... Add curve tangent tests
  a30a07a... Add gsk_curve_get_tight_bounds
  6145b6e... Add gsk_curve_get_bounds
  5a785c3... Add a curve bounds test
  0f3453e... Implement gsk_conic_curve_split
  9cc3b02... Add gsk_curve_intersect
  f3e861d... Add curve intersection tests
  6763e21... Add curve split tests
  a386636... Add a performance test for curve intersection
  76acbdd... Add a separate case for curve-curve intersection
  56e9dab... Add a performance test for curve eval
  93c63a1... Test splitting harder

(*) This commit already existed in another branch; no separate mail sent