CMAKE_ARGS <-> CMAKE_CONFIGURE_ARGS

[nia <nia%NetBSD.org@localhost>]

Was this change discussed anywherre? The commit message just says:

*: replace CMAKE_ARGS with CMAKE_CONFIGURE_ARGS

with no justification whatsoever.

For my money, this variable name is both excessively long and
inconsistent with both Meson (MESON_ARGS) and autotools (CONFIGURE_ARGS).

If there was going to be a change, I'd rather it be "use CONFIGURE_ARGS
for every build system". There's no real reason we need three variables.