Merge topic 'ninja-fortran'

33058150 Help: Document Ninja generator conditional Fortran support
59aae292 Ninja: Add dyndep rules for Fortran module dependencies
39ebfc79 Ninja: Add explicit preprocessing step for Fortran
9a77680e Ninja: Conditionally allow Fortran based on ninja 'dyndep' support
0f331d78 Ninja: Add internal tool to produce a ninja dyndep file for Fortran
d3e0b64b Ninja: Add internal tool to scan Fortran code for module dependencies
8eca59a1 Ninja: Add comment with Fortran dependency design documentation
a57d1bb7 Ninja: Add API to check for dyndep support
0488ae63 Ninja: Refactor ninja feature detection
f0a23aa3 Ninja: Refactor Fortran rejection logic