deps_builder: build fixes for oidn

- OIDN doesn't need to be build for debug builds on windows, while
it's mostly C++ code its public API is C
- Python was not found by the HIP build
- Level Zero was downloaded during the build.

build_files/build_environment/CMakeLists.txt

@@ -105,7 +105,6 @@ if(NOT APPLE)
   endif()
 endif()
 include(cmake/ispc.cmake)
-include(cmake/openimagedenoise.cmake)
 # Embree needs to be included after dpcpp as it uses it for compiling with GPU support
 include(cmake/embree.cmake)
 include(cmake/openpgl.cmake)
@@ -133,6 +132,7 @@ if(NOT WIN32 OR ENABLE_MSYS2)
   include(cmake/gmp.cmake)
   include(cmake/openjpeg.cmake)
   if(NOT WIN32 OR BUILD_MODE STREQUAL Release)
+    include(cmake/openimagedenoise.cmake)
     include(cmake/lame.cmake)
     include(cmake/ogg.cmake)
     include(cmake/vorbis.cmake)

build_files/build_environment/cmake/openimagedenoise.cmake

@@ -15,7 +15,7 @@ if(NOT APPLE)
     -DOIDN_DEVICE_SYCL=ON
     -DOIDN_DEVICE_SYCL_AOT=OFF
     -DOIDN_DEVICE_HIP=ON
-    -DLEVEL_ZERO_ROOT=${LIBDIR}/level-zero/lib
+    -DLEVEL_ZERO_ROOT=${LIBDIR}/level-zero
   )
 endif()
 
@@ -72,6 +72,13 @@ if(UNIX AND NOT APPLE)
   )
 endif()
 
+if(NOT APPLE)
+  add_dependencies(
+    external_openimagedenoise
+    external_level-zero
+  )
+endif()
+
 if(BUILD_MODE STREQUAL Release AND WIN32)
     ExternalProject_Add_Step(external_openimagedenoise after_install
       COMMAND ${CMAKE_COMMAND} -E copy_directory ${LIBDIR}/openimagedenoise/bin ${HARVEST_TARGET}/openimagedenoise/bin

build_files/build_environment/patches/oidn.diff

@@ -22,18 +22,26 @@ diff -Naur oidn-2.0.1/core/module.cpp external_openimagedenoise/core/module.cpp
    #if defined(_WIN32)
      filename += ".dll";
    #else
-diff -Naur oidn-2.0.1/devices/CMakeLists.txt external_openimagedenoise/devices/CMakeLists.txt
---- oidn-2.0.1/devices/CMakeLists.txt   2023-06-26 09:06:31.000000000 -0600
-+++ external_openimagedenoise/devices/CMakeLists.txt    2023-07-01 10:57:36.987238700 -0600
+diff -Naur oidn-2.1.0/devices/CMakeLists.txt external_openimagedenoise/devices/CMakeLists.txt
+--- oidn-2.1.0/devices/CMakeLists.txt	2023-10-11 14:04:08 -0600
++++ external_openimagedenoise/devices/CMakeLists.txt	2023-12-23 09:34:17 -0700
 @@ -59,6 +59,8 @@
        -DOIDN_API_NAMESPACE:STRING=${OIDN_API_NAMESPACE}
        -DOIDN_WARN_AS_ERRORS:BOOL=${OIDN_WARN_AS_ERRORS}
        -DOIDN_SANITIZER:STRING=${OIDN_SANITIZER}
-+      -DPYTHON_EXECUTABLE:STRING=${PYTHON_EXECUTABLE}
++      -DPython_EXECUTABLE:STRING=${Python_EXECUTABLE}
 +      -DCMAKE_DEBUG_POSTFIX:STRING=${CMAKE_DEBUG_POSTFIX}
      BUILD_ALWAYS TRUE
      DEPENDS
        OpenImageDenoise_core
+@@ -149,6 +151,7 @@
+       -DOIDN_API_NAMESPACE:STRING=${OIDN_API_NAMESPACE}
+       -DOIDN_WARN_AS_ERRORS:BOOL=${OIDN_WARN_AS_ERRORS}
+       -DOIDN_SANITIZER:STRING=${OIDN_SANITIZER}
++      -DPython_EXECUTABLE:STRING=${Python_EXECUTABLE}
+     BUILD_ALWAYS TRUE
+     DEPENDS
+       OpenImageDenoise_core
 --- a/core/module.cpp	2023-11-16 19:07:32
 +++ b/core/module.cpp	2023-11-16 19:08:01
 @@ -37,7 +37,8 @@