- add new interpolation method
  . imagescale
  . imageaffine
  . replace imagerotate with new generic and optimized new implementations
  . imagesetinterpolationmethod, to set the default interpolation to be
    used with the new functions
  . add imagepalettetotruecolor
- config.m4 sync with .w32
- add new files for interpolation
- fix unix build
- add affine matrix helper for translate, scale, rotate and shear
- add imageaffinematrixget and imagematrixconcat
add array_column()
fix memory leak

the value shouldn't be ref, use z_add_ref is enough
Fixed bug #64432 (more empty delimiter warning in strX methods)
Merge branch 'PHP-5.4' into PHP-5.5
Fix test after f8b91d9acff10ede7bd3f2bc631794a3abef8ff7
Merge branch 'PHP-5.4' into PHP-5.5
Fixed bug #64239 (Debug backtrace changed behavior since 5.4.10 or 5.4.11)
Merge branch 'PHP-5.4' into PHP-5.5
Update NEWS
Fix bug in reflectionClass relate to #64239
Merge branch 'PHP-5.4' into PHP-5.5
Add OPCache ini settings to php.ini
Tweaks an add OPcache info to UPGRADING
Add SplDoublyLinkedList::add to UPGRADING