Drop the context forceLoadAllArchives() support. Rename the isForceLoad
attribute in LinkerInput to isWholeArchive and use that for deciding
whether library archives should be expanded. Implement the -all_load
option of the Darwin linker using this flag and drop the support for it
in GNU mode.


git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@190275 91177308-0d34-0410-b5e6-96231b3b80d8