Implement xfer:libraries-svr4:read packet
This is the fourth patch to improve module loading in a series that started here (where I explain the motivation and solution): D62499
Implement the xfer:libraries-svr4 packet by adding a new function that generates the list and then in Handle_xfer I generate the XML for it. The XML is really simple so I'm just using string concatenation because I believe it's more readable than having to deal with a DOM api.
Reviewers: clayborg, xiaobai, labath
Reviewed By: labath
Subscribers: emaste, mgorny, srhines, krytarowski, lldb-commits
Differential Revision: https://reviews.llvm.org/D62502