Support more than 0xffff program headers #434

Job	Run time
Generate documentation	19s
Check generated C header	1m 8s
Benchmark	9m 53s
Build [ubuntu-latest, 1.65.0, dev, --workspace]	5m 35s
Build [ubuntu-latest, 1.65.0, release, --workspace]	5m 57s
Lint with clippy	49s
No-op rebuilds	1m 4s
Check code formatting	14s
Build [ubuntu-latest, stable, dev, --workspace]	15s
Build [ubuntu-latest, stable, release, --workspace]	24s
Test and coverage	2m 50s
Test with release build	1m 22s
Build [macos-latest, 1.65.0, dev, --workspace]	7m 41s
Build [macos-latest, 1.65.0, release, --workspace]	7m 7s
Build [macos-latest, stable, dev, --workspace]	44s
Build [macos-latest, stable, release, --workspace]	48s
Test with address sanitizer	3m 51s
Build [ubuntu-latest, stable, dev, --no-default-features]	20s
Test with leak sanitizer	2m 30s
	52m 51s

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