get rid of the GObject Builder (GOB2): converted teco-gtk-info-popup.gob and teco-gtk-label.gob to plain C

* Using modern GObject idioms and macros greatly reduces the necessary boilerplate code.
* The plain C versions of our GObject classes are now "final" (cannot be derived)
  This means we can hide the instance structures from the headers and avoid using
  explicit private fields.
* Avoids some deprecation warnings when building the Gtk UI.
* GOB2 is apparently no longer maintained, so this seems like a good idea in the long run.
* The most important reason however is that there is no precompiled GOB2 for Windows
  which prevents compilation on native Windows hosts, eg. during nightly builds.
  This is even more important as Gtk+3 is distributed on Windows practically
  exclusively via MSYS.
  (ArchLinux contains MinGW gtk3 packages as well, so cross-compiling from ArchLinux
  would have been an alternative.)

1 files changed, 1 insertions, 2 deletions

diff --git a/INSTALL b/INSTALL
index eb5ff8b..b166c93 100644
--- a/INSTALL
+++ b/INSTALL
@@ -34,7 +34,6 @@ SciTECO Build and Runtime Dependencies
    * other curses implementations might work as well but are untested
  * When choosing the GTK interface:
    * GTK+ v3.12 or later: http://www.gtk.org/
-   * GObject Builder v2.0.20 or later: http://www.jirka.org/gob.html
  * GNU roff (groff): https://www.gnu.org/software/groff/
    Required at build-time, but it is already shipped on most
    UNIX-like systems to format man pages.
@@ -54,7 +53,7 @@ On Ubuntu, you can install all dependencies you could possibly need
 as follows:
 
   $ sudo apt-get install git build-essential autoconf automake libtool \
-                         libglib2.0-dev libncurses-dev libgtk-3-dev gob2 \
+                         libglib2.0-dev libncurses-dev libgtk-3-dev \
                          groff doxygen
 
 Building from Source Tar Ball or Repository