VS: Fix `/analyze:log` flag mapping for v142
Apply the change from commit 44dc9fc4 (VS: Fix /analyze:log flag mapping, 2018-11-26) to the v142 flag table. The `/analyze:log` argument requires a value in the following argument. Also drop the general `/analyze:` flag table entry so that such flags will be passed through as plain additional options. This is necessary because some such options have following values and some do not but not all have `.vcxproj` elements to hold the values.
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