mergeArchives
fn
ArchiveHandle mergeArchives(const ArchiveHandle base, const ArchiveHandle diff, string outDir, string mergedBase, string ext) @safeMerges a base archive with a differential (incremental) archive into a new merged archive.
fn
ArchiveHandle mergeArchives(const ArchiveHandle base,
const ArchiveHandle diff,
string outDir,
string mergedBase,
string ext,
MergeOptions mo) @safeMerges two archives using custom MergeOptions.