[Rpm-maint] [rpm-software-management/rpm] Rust bindings for rpmlib (#429)

[Jeff Johnson]

Re hiding header objects

You an also hide headers in rust bindings.

There are 3 places that headers become visible:

1) when read from packages in order to create a transaction
This can be handled by passing *.rpm file names to rpmInstall or package names to rpmErase

2) Most usage cases for an rpmdb match iterator are interested in returning query information textually: you could pass in the queryformat and concarenate the strings from headers. Alternatively, you could bind the top level query/verify routines.

3) the transaction callback which is mostly used for pushing progress bars (you haven't worried about that: the default callback is mostly good enough)

By hiding all of the information, and adding a version comparison, that is likely 90% of what users want from rpm in their own native language.



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