[hellerve]

Five Luax macros (luax--def-maybe-get and the global and field setters and getters) defined their functions by calling eval on a (do (doc …) (defn …)) form at expansion time. Each was the macro's last expression, so the macros now return that form instead, and the compiler defines the functions as it would any other expansion. Usage is unchanged. The eval in Lua.setup stays: it runs system-include and add-cflag, not definitions.

The reason is portability, as in suite#3 and web#73: a compiler that expands macros ahead of time and keeps compile-time code apart from the program can't eval a static definition in the middle of expansion. metacarp is one, and lua failed there because its compile-time evaluator has no meta-set!, which doc needs. With this change the library compiles on metacarp.

Tests. On the reference compiler all five test files pass (76, 86, 10, 22 and 25 tests), as do lint, format and gendocs. On metacarp the main suite passes, 76/76.