[gnome-photos/wip/rishi/drop-autotools] build: Drop the Autotools build system

[Debarshi Ray <debarshir src gnome org>]

commit 806faa032c27259047fe0d5145d63a3ad952aca7
Author: Debarshi Ray <debarshir gnome org>
Date:   Mon Aug 26 15:32:28 2019 +0300

    build: Drop the Autotools build system
    
    Meson has been the preferred build system for a while now - Build
    Meta, Continuous, JHBuild, and the stable and nightly Flatpak
    manifests have been building with Meson, and so has been Fedora.
    So far, there are no known issues with it.
    
    Having to maintain one less build system is a big win.
    
    https://gitlab.gnome.org/GNOME/gnome-photos/merge_requests/113

 Makefile.am                     |  41 ---
 autogen.sh                      |  40 ---
 configure.ac                    | 153 ---------
 data/Makefile.am                |  64 ----
 data/icons/Makefile.am          |  63 ----
 git.mk                          | 400 -----------------------
 glib-tap.mk                     | 136 --------
 help/Makefile.am                |  20 --
 m4/ax_append_compile_flags.m4   |  67 ----
 m4/ax_append_flag.m4            |  71 ----
 m4/ax_append_link_flags.m4      |  65 ----
 m4/ax_check_compile_flag.m4     |  74 -----
 m4/ax_check_link_flag.m4        |  74 -----
 m4/ax_compiler_flags.m4         | 158 ---------
 m4/ax_compiler_flags_cflags.m4  | 140 --------
 m4/ax_compiler_flags_gir.m4     |  60 ----
 m4/ax_compiler_flags_ldflags.m4 |  92 ------
 m4/ax_is_release.m4             |  80 -----
 m4/ax_require_defined.m4        |  37 ---
 m4/glibtests.m4                 |  31 --
 po/Makevars                     |  78 -----
 src/Makefile.am                 | 702 ----------------------------------------
 tap-driver.sh                   | 652 -------------------------------------
 tap-test                        |   5 -
 tests/Makefile.am               |  31 --
 tests/unit/Makefile.am          |  61 ----
 26 files changed, 3395 deletions(-)