Fixed check for DDImage headers to use the C++ compiler.
Fixed check for DDImage headers to use the C++ compiler.

tectronics/cortex-vfx,Alwnikrotikz/cortex-vfx,AlanZatarain/cortex-vfx,Alwnikrotikz/cortex-vfx,tectronics/cortex-vfx,tectronics/cortex-vfx,AlanZatarain/cortex-vfx,Alwnikrotikz/cortex-vfx,AlanZatarain/cortex-vfx