[LLD] [MinGW] Add a testcase for -l:name style library options. NFC.
[LLD] [MinGW] Add a testcase for -l:name style library options. NFC.

Differential Revision: https://reviews.llvm.org/D68688

git-svn-id: f6089bf0e6284f307027cef4f64114ee9ebb0424@374291 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/lld,llvm-mirror/lld