[PATCH 0/4] MR5216: msi: Fix costing calculations a bit, and avoid overflow.

[Zebediah Figura (＠zfigura)]

This work is based on Wine-Staging patch "msi-msi_vcl_get_cost" by Mark Jansen.

That patch attempts to avoid overflow, although not particularly well, since the
damage would already have been done by calculate_file_cost(). This patch series
addresses the issue in both places.

The Wine-Staging patch seems to have originally been written in an attempt to
address a bug visible with (at least) some Microsoft Office and LibreOffice 
installers where file costs would render incorrectly. That bug is recorded as
ReactOS bug 12229 [1], which report includes both the patch to vcl_get_cost(),
and the patch fixing the actual bug, which did eventually made it upstream as
b53957df2a73ae51ca6ebc1e88bb9c4ed8b8d274.

[1] https://jira.reactos.org/browse/CORE-12229