New OPTIONS and make.conf knobs

[Doug Barton]

My understanding is that one of the benefits of the new OPTIONS
framework is that it's supposed to take make.conf knobs into account
when displaying the options dialog.

I have WITHOUT_NLS defined in make.conf, but when I started an upgrade
today for x11-toolkits/libxfce4gui the dialog came up with all options
chosen (DOCS, NLS, STARTUP) even though I have the make.conf knob, and
the following in the existing options file:

_OPTIONS_READ=libxfce4gui-4.8.1
WITHOUT_NLS=true
WITH_STARTUP=true
WITH_GLADEUI=true
WITHOUT_APIDOCS=true

The fact that the STARTUP option is still enabled is fine, although I
suspect it's probably a side effect. The fact that the other 2 options
are showing as enabled is a bug. In the case of NLS, it's likely at
least 2 different bugs.

FWIW, this showed up using portmaster, which runs 'make
config-conditional' by default.

Doug

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