I introduce AnyEqualsExpr for either reference or value equality and AnyEqualityTest for the same concept including not-equals operators, and use them wherever the written QL clearly doesn't care about the difference between reference and value comparison, typically because it is concerned with testing against null or against a primitive constant.
Also, change some examples pack names from `codeql-lang-examples` to
`codeql/lang-examples`. This doesn't affect behaviour since internally,
the legacy name is converted to the modern name.
This commit ensures consistency among all of our qlpacks. Here are the
changes:
1. Ensure only modern references are used (codeql-{lang} is converted to
codeql/{lang}-all or codeql/{lang}-queries where appropriate).
2. Use consistent version numbers. All languages are at 0.0.2 except
javascript, which is 0.0.3.
3. Convert all `libraryPathDependencies` to `dependencies` with version
constraints
4. Dependencies from query packs to other packs are always `"*"` since
these dependencies are always from source and we should get the
latest.
5. Dependencies from codeql/{lang}-lib to codeql/{lang}-upgrades must
be strict since there is a tight connection between the libary
and its relevant upgrades.
