compilers: Ensure -L flags do not get reordered when used with MSVC

[amyspark]

👋

If -L flags get into CLikeCompiler::build_wrapper_args, they will be correctly detected and the /LINK flag added to the list. However, CompilerArgs::__iadd__ will reorder them to the front, thinking they're GNU-style flags, and this will cause MSVC to ignore them after conversion.

The proposed fix here is to, once the need for /LINK is detected, execute in situ the unix_to_native replacement and ensure they do not get further reordered.

Fixes #11113

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (9797f76) 69.81% compared to head (ea188c0) 68.79%.

:exclamation: Current head ea188c0 differs from pull request most recent head 9dc8b3f. Consider uploading reports for the commit 9dc8b3f to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #11123      +/-   ##
==========================================
- Coverage   69.81%   68.79%   -1.02%     
==========================================
  Files         219      207      -12     
  Lines       48486    45329    -3157     
  Branches    11499     9378    -2121     
==========================================
- Hits        33850    31186    -2664     
+ Misses      12196    11749     -447     
+ Partials     2440     2394      -46     

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[amyspark]

@nirbheek ping for review, @tristan957 said you were knowledgeable in this area.

[amyspark]

@nirbheek I'd do it, but I'm not sure how to do reflection on targets from windowstests.py. We'd also need some placeholder library to enable the lookup.

[amyspark]

@nirbheek Just figured a way to add that test :D All lines should be covered now.