Rename fixdiff boundary condition to reflect.

This is what it actually does, we do not support setting arbitrary
derivative values.

API bump.

1 files changed, 1 insertions, 1 deletions

diff --git a/libmg2d.v b/libmg2d.v
index 7fb72b7..f4dd528 100644
--- a/libmg2d.v
+++ b/libmg2d.v
@@ -1,4 +1,4 @@
-LIBMG2D_8 {
+LIBMG2D_9 {
     global: mg2d_*;
     local: *;
 };