[babl] change default BABL_TOLERANCE to 0.000006

[Øyvind Kolås <ok src gnome org>]

commit 96ba36be3f30ecaa47ddef855f74ac4e47d4662f
Author: Øyvind Kolås <pippin gimp org>
Date:   Wed Nov 16 20:36:57 2016 +0100

    change default BABL_TOLERANCE to 0.000006
    
    This makes the cairo.so extensions fast path for RGBA float blitting to be
    accepted. This makes conversions with internal quantization of roughly 16bit be
    accepted.

 babl/babl-fish-path.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/babl/babl-fish-path.c b/babl/babl-fish-path.c
index ebbdd9e..25d3bd1 100644
--- a/babl/babl-fish-path.c
+++ b/babl/babl-fish-path.c
@@ -21,7 +21,7 @@
 #include "babl-internal.h"
 #include "babl-ref-pixels.h"
 
-#define BABL_LEGAL_ERROR           0.000001
+#define BABL_LEGAL_ERROR           0.000006
 #define BABL_MAX_COST_VALUE        2000000
 #define BABL_HARD_MAX_PATH_LENGTH  8
 #define BABL_MAX_NAME_LEN          1024