Backfills the standard MIT X11 header on hand-written files that never
got one, attributing each to its first-commit author and year from git
history. Code vendored from dotnet/runtime and Humanizr/Humanizer gets
its origin's license lines and a provenance note instead. Generated
files (Resources.Designer.cs, the version-info template), tool-managed
suppression files, and BAML test-case fixtures intentionally stay
header-less.
Assisted-by: Claude:claude-fable-5:Claude Code
This contains no functional changes, except that
it will ignore blank lines when comparing code.
This reduces duplicate code, and will make it
easier to add assertions for Roslyn compilers
* Added new-lines as needed to make the source formatting match what the actual output was.
* Added code to CodeAssert to make it ignore #regions
* Added code to output decimal.MinValue and decimal.MaxValue as appropriate