Rust

Bump LMDB commit, use GitLab for LMDB and improve the build script #465

Job	Run time
Check all the features of the heed project (ubuntu-latest)	17s
Test the heed project (ubuntu-latest)	29s
Check all the features of the heed project (macos-latest)	25s
Test the heed project (windows-latest)	53s
Test the heed project (macos-latest)	26s
Check the heed3 project (ubuntu-latest)	18s
Check all the features of the heed3 project (ubuntu-latest)	29s
Check the heed3 project (windows-latest)	1m 14s
Test the heed3 project (ubuntu-latest)	38s
Check all the features of the heed3 project (macos-latest)	29s
Check the heed3 project (macos-latest)	26s
Test the heed3 project (windows-latest)	1m 29s
Test the heed3 project (macos-latest)	27s
Ensure clippy is happy on heed and heed3	29s
Run the heed examples (ubuntu-latest)	23s
Ensure the heed and heed3 project are formatted	12s
Run the heed examples (macos-latest)	38s
Run the heed3 examples (ubuntu-latest)	33s
Run the heed3 examples (macos-latest)	27s
Ensure heed3 is not erasing heed	3s
	10m 45s

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