[gnome-disk-utility] build: Rename build options

[Kai Lüke <kailueke src gnome org>]

commit 91d9b72c4f769b57c39db0c93e71055b6a3bd479
Author: Iñigo Martínez <inigomartinez gmail com>
Date:   Mon Nov 13 18:54:55 2017 +0100

    build: Rename build options
    
    Following the new meson porting guidelines, this patch renames the
    build options. The list of changes is as follows:
    
    - Remove the enable prefix from boolean options.
    - The character separator from multi-word options has been changed
      to underscore.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=790303

 meson.build       |    4 ++--
 meson_options.txt |    4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/meson.build b/meson.build
index 4d196a0..d1d302b 100644
--- a/meson.build
+++ b/meson.build
@@ -166,7 +166,7 @@ config_h.set('HAVE_UDISKS2_7_2', udisks2_7_2_dep.found(),
              description: 'Define to 1 if UDisks version >= 2.7.2 for resize, repair, check')
 
 # *** Check for libsystemd ***
-enable_libsystemd = get_option('enable-libsystemd')
+enable_libsystemd = get_option('libsystemd')
 if enable_libsystemd
   libsystemd_dep = dependency('libsystemd', version: '>= 209', required: false)
   config_h.set('HAVE_LIBSYSTEMD', libsystemd_dep.found(),
@@ -190,7 +190,7 @@ subdir('src/disks')
 subdir('src/disk-image-mounter')
 
 # *** gnome-settings-daemon plug-in ***
-enable_gsd_plugin = get_option('enable-gsd-plugin')
+enable_gsd_plugin = get_option('gsd_plugin')
 if enable_gsd_plugin
   subdir('src/notify')
 endif
diff --git a/meson_options.txt b/meson_options.txt
index 6474b48..952f5d2 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -1,2 +1,2 @@
-option('enable-libsystemd', type: 'boolean', value: true, description: 'build with libsystemd')
-option('enable-gsd-plugin', type: 'boolean', value: true, description: 'build gnome-settings-daemon plug-in')
+option('libsystemd', type: 'boolean', value: true, description: 'build with libsystemd')
+option('gsd_plugin', type: 'boolean', value: true, description: 'build gnome-settings-daemon plug-in')