…ayfire#2848)
* Adds CMake variable AF_CACHE_KERNELS_TO_DISK to enable kernel caching. It is turned ON by default.
* cuda::buildKernel() now dumps cubin to disk for reuse
* Adds cuda::loadKernel() for loading cached cubin files
* cuda::loadKernel() returns empty kernel on failure
* Uses XDG_CACHE_HOME as cache directory for Linux
* Adds common::deterministicHash() - This uses the FNV-1a hashing algorithm for fast and reproducible hashing of string or binary data. This is meant to replace the use of std::hash in some place, since std::hash does not guarantee its return value will be the same in subsequence executions of the program.
* Write cached kernel to temporary file before moving into final file. This prevents data races where two threads or two processes might write to the same file.
* Uses deterministicHash() for hashing kernel names and kernel binary data.
* Adds kernel binary data file integrity check upon loading from disk

* Adds CMake variable AF_CACHE_KERNELS_TO_DISK to enable kernel caching. It is turned ON by default.
* cuda::buildKernel() now dumps cubin to disk for reuse
* Adds cuda::loadKernel() for loading cached cubin files
* cuda::loadKernel() returns empty kernel on failure
* Uses XDG_CACHE_HOME as cache directory for Linux
* Adds common::deterministicHash() - This uses the FNV-1a hashing algorithm for fast and reproducible hashing of string or binary data. This is meant to replace the use of std::hash in some place, since std::hash does not guarantee its return value will be the same in subsequence executions of the program.
* Write cached kernel to temporary file before moving into final file. This prevents data races where two threads or two processes might write to the same file.
* Uses deterministicHash() for hashing kernel names and kernel binary data.
* Adds kernel binary data file integrity check upon loading from disk