[PATCH][MC/Dwarf] Allow to specify custom parameters for linetable emission.

[Frédéric Riss via llvm-commits]

Hi,

The attached patch (based on a patch from Adrian), allows to customize the encoding of the Dwarf line tables emitted by MC. llvm-dsymutil has be able to recreate line tables that were created by other compilers and that do not necessarily use the same settings. The patch is really mechanical just threading a new word-sized MCDwarfLineTableParams trust through he linetable routines. The patch is NFC wrt current uses.

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Fred