xeme/xeme

841b70e8dbf5
Make sure the gir target is added to the dependency

Also clean up some variable names to match our other projects.

Testing Done:
Ran the following without issue

```
meson setup --wipe -Dintrospection=false -Ddoc=false build-no-introspection
ninja -C build-no-introspection/ turtles
```

Reviewed at https://reviews.imfreedom.org/r/2952/
option(
'doc',
type : 'boolean', value : true, yield : true,
description : 'build documentation with gi-docgen'
)
option(
'introspection',
type : 'boolean', value : true, yield : true,
description : 'Whether or not to build a GObject Introspection type library'
)
option(
'nls',
type : 'boolean', value : true, yield : true,
description : 'Install translation files'
)