Made a few ui fixes, like removing unnecessary shadows in the workspace and property editor.
Also replaces old atk icons with a new one.
Fixed copyright dates in about dialog
Fixed some compiler warnings and added extra check to glade_widget_set_object() to make sure there is an adaptor.
Fixed bug 702886 "SEGV when creating a new GtkDialog (GLib 2.37.x)"
glib changed the order construct properties are set which exposed this bug,
now they are set in the order they are installed in the class.
So we fixed the bug by installing adaptor property first and object last.
Fixed Bug 694081 "Glade loses widget's tooltips on Cut/Paste"

As a simple workaround we simply make glade ignore all tooltip related properties at runtime.
You can still edit them as normal, but you just wont be able to see the tooltips in the workspace.
Added executable check to build script
Fixed Bug 646259 "SIGSEGV in glade_widget_adaptor_object_construct_object loading ui file"
Do not try to instantiate abstract class objects, this should prevent glade aborting when
trying to load uninstantiable objects.
Fixed bug 584381 "Saving as an existing file name except the extension overwrites without confirmation."

The problem was that if the selected filename did not had an extension we appended append a .glade extension
but did not check if the new filename existed or not.
Now we fixed this problem by selecting the file if it exist and running the dialog again, giving it a chance
to promt the user about overwriting.
Misc activatable and tool button editor cleanups.

Removed use of size groups, replaced with table attachment fill prop.

Fixes Bug 616834 "Freeze when changing toolbutton type after renaming it"
Improved pango text integer attributes editors.
Make the spin button numeric and clear the attr if the new text is an empty string!

This should be enough to close Bug 679006
"The "size" attribute for labels only accepts integer values (not strings like "larger")"
Fixed glade_gtk_image_get_property() chainup. (was calling set_property)
Fixes bug that prevented the runtime object to show the right pixbuf when copying a GtkImage.
Added workaround for Bug 625867 "RadioButton information lost on cut+paste, add/remove parent, etc"
Rolling 3.8.4
Added gtk+-2.0 libs to gtkdoc-scanobj LDFLAGS
Backported feature to make GladeProject remember unknown object classes
Comited backport of GtkComboBoxText support

Closes Bug 689667 "backport support for GtkComboBoxText"
Moved GtkComboBoxText support code to its own file for better comparison with the code in master.

Added missing fmt parameter to glade_gtk_combo_box_text_string_from_value()
Mark glade-items property as libglade unsupported.