Meson: Fix declare_dependency() calls

Turns out the fix in commit 93555577c wasn't enough, when using glib as
subproject and the parent project uses only libgio_dep, and include
<gi18n.h>, it won't find libintl.h because it's in the
include_directories of libglib_dep. Fix that by declaring dependencies
explicitly, which is the right thing to do since glib and gobject are
public dependencies of gio. That reflects what we do for the pkg-config
file as well.

gio/meson.build

@@ -855,9 +855,8 @@ else
 endif
 
 libgio_dep = declare_dependency(link_with : libgio,
-  dependencies : [gioenumtypes_dep],
+  dependencies : [libgmodule_dep, libgobject_dep, gioenumtypes_dep],
-  # We sadly need to export configinc here because everyone includes <gio/*.h>
+  include_directories : [gioinc])
-  include_directories : [configinc, glibinc, gobjectinc, gmoduleinc, gioinc])
 
 if host_system == 'windows'
   # Hack till https://github.com/mesonbuild/meson/issues/2324 is fixed

gmodule/meson.build

@@ -140,4 +140,5 @@ pkg.generate(libraries : [libgmodule, export_dynamic_ldflags],
 )
 
 libgmodule_dep = declare_dependency(link_with : libgmodule,
-  include_directories : [configinc, gmoduleinc, glibinc])
+  include_directories : [gmoduleinc],
+  dependencies : [libglib_dep])

gobject/meson.build

@@ -84,7 +84,8 @@ pkg.generate(libraries : libgobject,
 )
 
 libgobject_dep = declare_dependency(link_with : libgobject,
-  include_directories : [configinc, glibinc, gobjectinc])
+  include_directories : [gobjectinc],
+  dependencies : [libglib_dep])
 
 python_tools = [
   'glib-genmarshal',