Original header commit v3.13.0-rc2~6^2
Add a missing `:` to these entries in the flag table. The user
value is always required and must come after the `:`.
Generate initial json flag tables for C# based on the initial
headers.
Original header commit v3.8.0-rc1~230^2
Add these (currently unused) tables in preparation for `.csproj`
generation support. Populate the tables for every version with a set of
initial values that work well for me with VS 12 and VS 14. Later we may
need to generate them more thoroughly from MSBuild `.xml` files.
Wil Stark