9353fc280d
Improve the selection of headers included in the precompiled header. This reduces build time of the full `io/usd` directory by 12 to 19%. Laptop i7-8750h: Average 30.3 sec --> 24.5 sec Desktop i7-13700k: Average 12.1 sec --> 10.7 sec Pull Request: https://projects.blender.org/blender/blender/pulls/140418