Though the description of the POINTER type clearly tells of the new type
size, it was still refered as 32-bit only in this introductory text.
Let's fix this.
Though it may have started as an unofficial document, it is clearly now
an official one (which should be obvious since it is in our source
repository, but apparently some people get misled by the historical
"Status" text to think this to be somehow unofficial).
So first of all, change the s/official/unofficial/ mention.
Secondly, add a small paragraph explicitly telling that the document is
complete (and meant to be), to the best of our knowledge. This document
is a detailed, full and exhaustive written "specification" of the XCF
format up to GIMP 2.10.x (even though the normative spec is still the
code itself). Now we are humans, we may have missed something, and if
so, this is just to be considered as any other bug, and reported to us
nicely to be fixed.
It's just too weird to be public. Remove its properties from the wire
protocol and from pluginrc. Instead, have all GParamSpecs' flags on
the wire and in pluginrc, so we can use stuff like
GIMP_PARAM_NO_VALIDATE.
Port the remaining few places to GIMP_PROC_ARG_STRING().
I'm sure something is broken now wrt UTF-8 validation,
will add tighter checks in the next commit.
GimpConfigWriter contains several constructors with the convention
`gimp_config_writer_new_* ()`. This will lead to problems however with
languages like Vala, where it cannot disambiguate the following:
```
// calls config_writer_new_string()
Gimp.ConfigWriter w = new ConfigWriter.string("xxx");
// calls config_writer_string()
w.string("xxx")
```
Using `from_` in constructors is general practice in GObject-bsed
libraries because of this.
This also fixes an error when trying to use vapigen on the GIMP .GIR
file.
Right now, we get the following warnings when building the docs:
> gtk-doc.xsl: For acronym (nullable) no value found
This is because we're not adding the generated annotation glossary to
the docs sgml (presumably because we didn't need it as we didn't use
GObject-Introspection yet). This commit adds those lines and thus fixes
the warnings.
