[gitg] build: Remove autotools

[Alberto Fanjul <albfan src gnome org>]

commit 6784aa9f1b6f143867df57c05c464d30f08eea42
Author: Iñigo Martínez <inigomartinez gmail com>
Date:   Sun Oct 14 11:05:57 2018 +0200

    build: Remove autotools
    
    To avoid the burden of maintaining multiple build systems, autotools
    support has been removed.

 Makefile.am                       | 121 ------------
 autogen.sh                        |  46 -----
 configure.ac                      | 390 --------------------------------------
 contrib/ide/Makefile.am           |  24 ---
 contrib/xml/Makefile.am           |   9 -
 data/Makefile.am                  |  32 ----
 data/icons/Makefile.am            |  57 ------
 git.mk                            | 319 -------------------------------
 gitg/Makefile.am                  | 128 -------------
 icons.mk                          |  19 --
 libgitg-ext/Makefile.am           | 133 -------------
 libgitg-ext/libgitg-ext-1.0.pc.in |  11 --
 libgitg/Makefile.am               | 155 ---------------
 libgitg/libgitg-1.0.pc.in         |  11 --
 plugins/Makefile                  |   9 -
 plugins/Makefile.am               |   4 -
 plugins/diff/Makefile.am          |  57 ------
 plugins/diff/icons/Makefile.am    |   3 -
 plugins/files/Makefile.am         |  56 ------
 sub.mk                            |  14 --
 tests/Makefile.am                 |  49 -----
 tests/gitg/Makefile.am            |  68 -------
 tests/libgitg/Makefile.am         |  58 ------
 vapi/Makefile.am                  |  11 --
 win32/Makefile.am                 |  10 -
 25 files changed, 1794 deletions(-)