replace rbtree implementation with tree.h from freebsd

added tree.h from freebsd repository and ported our name cache and client owner code

Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>

build.vc10/daemon.vcxproj

@@ -215,7 +215,6 @@
     <ClCompile Include="..\daemon\pnfs_device.c" />
     <ClCompile Include="..\daemon\pnfs_io.c" />
     <ClCompile Include="..\daemon\pnfs_layout.c" />
-    <ClCompile Include="..\daemon\rbtree.c" />
     <ClCompile Include="..\daemon\readdir.c" />
     <ClCompile Include="..\daemon\readwrite.c" />
     <ClCompile Include="..\daemon\service.c" />
@@ -239,8 +238,8 @@
     <ClInclude Include="..\daemon\nfs41_types.h" />
     <ClInclude Include="..\daemon\nfs41_xdr.h" />
     <ClInclude Include="..\daemon\pnfs.h" />
-    <ClInclude Include="..\daemon\rbtree.h" />
     <ClInclude Include="..\daemon\service.h" />
+    <ClInclude Include="..\daemon\tree.h" />
     <ClInclude Include="..\daemon\upcall.h" />
     <ClInclude Include="..\daemon\util.h" />
   </ItemGroup>

build.vc10/daemon.vcxproj.filters

@@ -86,9 +86,6 @@
     <ClCompile Include="..\daemon\lookup.c">
       <Filter>Source Files</Filter>
     </ClCompile>
-    <ClCompile Include="..\daemon\rbtree.c">
-      <Filter>Source Files</Filter>
-    </ClCompile>
     <ClCompile Include="..\daemon\name_cache.c">
       <Filter>Source Files</Filter>
     </ClCompile>
@@ -151,9 +148,6 @@
     <ClInclude Include="..\daemon\list.h">
       <Filter>Header Files</Filter>
     </ClInclude>
-    <ClInclude Include="..\daemon\rbtree.h">
-      <Filter>Header Files</Filter>
-    </ClInclude>
     <ClInclude Include="..\daemon\name_cache.h">
       <Filter>Header Files</Filter>
     </ClInclude>
@@ -166,6 +160,9 @@
     <ClInclude Include="..\daemon\idmap.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\daemon\tree.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\daemon\sources">