While these "macros" work perfectly fine in confutils, it is somewhat
strange to have these two there, while all others are in config.w32
files.
In particular, there is no need for a `MODE_PHPIZE` guard, since there
are already config.w32 and config.w32.phpize.in.
However, we need to replace the semicolon in the helptext, because the
regex which parses ARG_(ENABLE|WITH) calls is restricted, and does not
accept semicolons.
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