[gnome-games/wip/exalm/mame] build: Disable MAME plugin by default

[Alexander Mikhaylenko <alexm src gnome org>]

commit 939062e68f3447a7d33ad1778af501c4f62e654c
Author: Alexander Mikhaylenko <exalm7659 gmail com>
Date:   Sun Oct 7 13:38:31 2018 +0500

    build: Disable MAME plugin by default
    
    This plugin is very slow, has false positives and we don't ship any cores
    for it anyway, so disable it for now.

 meson_options.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson_options.txt b/meson_options.txt
index 900ae21d..3956cf6d 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -15,7 +15,7 @@ option ('dreamcast-plugin',     description: 'Support for Dreamcast games',
 option ('game-cube-plugin',     description: 'Support for GameCube games',      type: 'boolean')
 option ('libretro-plugin',      description: 'Support for Libretro games',      type: 'boolean')
 option ('love-plugin',          description: 'Support for LÖVE games',          type: 'boolean')
-option ('mame-plugin',          description: 'Support for MAME games',          type: 'boolean')
+option ('mame-plugin',          description: 'Support for MAME games',          type: 'boolean', value: 
false)
 option ('nintendo-ds-plugin',   description: 'Support for Nintendo DS games',   type: 'boolean')
 option ('playstation-plugin',   description: 'Support for PlayStation games',   type: 'boolean')
 option ('sega-cd-plugin',       description: 'Support for Sega CD games',       type: 'boolean')