#lint-ahoy

Many bugfixes and enhancements in this release.

• Refine makefile grammar for robustness.
• Include lines now take precedence over macros. This assists when linting for UB_AMBIGUOUS_INCLUDE.
• Fix inspect control flow for various kinds of files.
• Fix how machine generated makefiles are detected and skipped for linting.
• Detect gyp projects.
• Refine error handling and error message formatting.
• Preserve path casing in inspect::Metadata reports.
• Add new attributes to inspect::Metadata reports.
• Reduce some internal boilerplate in the unit test code.
• Add more tests.
• Refine documentation.
• Implemente our first set of standard makefile linter warnings.

Linter warning topics range from Undefined Behavior (UB) to hazards of global empty .INCLUDE declarations, to wasteful No-OPerations (NOP's) to simplifying boilerplate, to basic .PHONY semantics, to proper use of .POSIX declarations, to minor makefile performance enhancements.

Skipping pre-compiled ports out of expediency. An upcoming hotfix will soon generate fresh ports.