Change GenericBinaryError to no longer include a FileName, which is then not

Change GenericBinaryError to no longer include a FileName, which is then not
part of the error message.

As the caller is the one that needs to add the name of where the "object file"
comes from to the error message as the object file could be in an archive, or
coming from a slice of a Mach-O universal file or a buffer created by a JIT.

In the cases of a Mach-O universal file the architecture name may or may not
also need to be printed which is up to the tool code.  For example if the tool
code is only selecting the host architecture slice then that architecture name
is never printed.

This patch is the change to the libObject code and there will be follow on
commits for changes to the code for each tool.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@268789 91177308-0d34-0410-b5e6-96231b3b80d8