CDRIVER-902: Bump libbson to 1.2.0-dev so Solaris build work again

bjori · bjori · commit 5f7fd402e657 · 2015-10-02T11:48:41.000-07:00
diff --git a/src/libbson b/src/libbson
@@ -1 +1 @@
-Subproject commit 7afe7e98969889c442f780eda45172d33a1d9e8e
+Subproject commit 68907621daf0466c49cacde3a42dc0b38c96e0f9
