opencl-headers: add d3d and dx9 headers (#2117)

mingw-w64-opencl-headers/PKGBUILD

@@ -3,7 +3,7 @@ _realname=opencl-headers
 pkgbase=mingw-w64-${_realname}
 pkgname=${MINGW_PACKAGE_PREFIX}-${_realname}
 pkgver=2.1.20161129 # date of the commit, branch 2.1
-pkgrel=2
+pkgrel=3
 epoch=2
 pkgdesc='OpenCL (Open Computing Language) header files'
 arch=('any')
@@ -33,9 +33,6 @@ package() {
     install -m 644 ${h} "${pkgdir}${MINGW_PREFIX}/include/CL/"
   done
 
-  # remove useless headers
-  rm "${pkgdir}${MINGW_PREFIX}"/include/CL/{cl_d3d,cl_dx9}*.h
-
   cd "${srcdir}"/OpenCL-CLHPP
 
   python3 gen_cl_hpp.py -i input_cl.hpp -o cl.hpp