[gegl] meson: Do not build with f16c support by default

[Øyvind "pippin" Kolås <ok src gnome org>]

commit 250bf33ecbe50ffdfcb766a0c73a93c6fe3a3123
Author: Øyvind Kolås <pippin gimp org>
Date:   Mon Aug 19 14:35:22 2019 +0200

    meson: Do not build with f16c support by default
    
    Fixes issue #190

 meson_options.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson_options.txt b/meson_options.txt
index e9185d668..2686ed9ca 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -2,7 +2,7 @@ option('enable-mmx',    type: 'boolean', value: true, description: 'enable MMX s
 option('enable-sse',    type: 'boolean', value: true, description: 'enable SSE support')
 option('enable-sse2',   type: 'boolean', value: true, description: 'enable SSE2 support')
 option('enable-sse4_1', type: 'boolean', value: true, description: 'enable SSE4.1 support')
-option('enable-f16c',   type: 'boolean', value: true, description: 'enable hardware half-float support')
+option('enable-f16c',   type: 'boolean', value: false, description: 'enable hardware half-float support')
 option('docs',          type: 'boolean', value: 'false')
 option('workshop',      type: 'boolean', value: 'false')
 option('introspection', type: 'boolean', value: 'true')