Convert bitbucket links for sdf9

Signed-off-by: Steven Peters <scpeters@openrobotics.org>

sdf/1.7/physics.sdf

@@ -200,7 +200,7 @@
         <description>
           Flag to enable dynamic rescaling of moment of inertia in constrained directions.
           See gazebo pull request 1114 for the implementation of this feature.
-          https://bitbucket.org/osrf/gazebo/pull-request/1114
+          https://osrf-migration.github.io/gazebo-gh-pages/#!/osrf/gazebo/pull-request/1114
         </description>
       </element>
       <element name="friction_model" type="string" default="pyramid_model" required="0">
@@ -213,8 +213,8 @@
           cone_model: friction force magnitude limited in proportion to normal force.
 
           See gazebo pull request 1522 for the implementation of this feature.
-          https://bitbucket.org/osrf/gazebo/pull-request/1522
-          https://bitbucket.org/osrf/gazebo/commits/8c05ad64967c
+          https://osrf-migration.github.io/gazebo-gh-pages/#!/osrf/gazebo/pull-request/1522
+          https://github.com/osrf/gazebo/commit/968dccafdfbfca09c9b3326f855612076fed7e6f
         </description>
       </element>
     </element> <!-- End Solver -->

src/FrameSemantics.cc

@@ -34,7 +34,7 @@ inline namespace SDF_VERSION_NAMESPACE {
 // The following two functions were originally submitted to ign-math,
 // but were not accepted as they were not generic enough.
 // For now, they will be kept here.
-// https://bitbucket.org/ignitionrobotics/ign-math/pull-requests/333
+// https://osrf-migration.github.io/ignition-gh-pages/#!/ignitionrobotics/ign-math/pull-requests/333
 
 /// \brief Starting from a given vertex in a directed graph, traverse edges
 /// in reverse direction to find a source vertex (has only outgoing edges).