Propagate backtraces from LINK_LIBRARIES through to link line items
Since !3805 (merged), backtraces
have been collected by ComputeLinkLibs
by looking back through the
link implementation libraries for one matching the text of the link line
item. This is slow in projects with long link lines.
Instead, teach cmComputeLinkDepends
and cmComputeLinkInformation
to
carry backtrace information explicitly along with the text of each item.
Fixes: #20322 (closed)
Backport: release