Incremental build comment cleanup and minor fix for logical file timestamps (#10677)
Incremental build comment cleanup and minor fix for logical file timestamps (#10677)

* Incremental build comment cleanup and minor fix for logical file timestamps

* Update IncrementalBuild.fs
dsyme/fsharp,dsyme/fsharp,dsyme/fsharp,dsyme/fsharp,dsyme/fsharp,dsyme/fsharp,dsyme/fsharp