[PATCH v2 0/2] MR10748: wusa: Recognize runtime.syswow64 expressions.

[David Carrasco Flores (＠dcf1007)]

Some update manifests use $(runtime.syswow64) as an explicit target
for the 32-bit system directory. wusa currently handles runtime.system32
with WoW64-aware redirection, but does not recognize runtime.syswow64,
causing expression expansion to fail.

Map runtime.syswow64 to CSIDL_SYSTEMX86 on x86_64, matching the existing
runtime.programfilesx86 and runtime.commonfilesx86 handling.

--
  v2: wusa: Split cabinet path before calling FDICopy.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/10748