[f-spot] Fix build in monodevelop. Mono.Posix was missing.

[Stephen Shaw <sshaw src gnome org>]

commit 0aae7d02f57ed30059eff35dff08568323a3be6f
Author: Stephen Shaw <sshaw decriptor com>
Date:   Wed Nov 16 01:14:21 2011 -0700

    Fix build in monodevelop.  Mono.Posix was missing.

 .../FSpot.Transitions.Cover.csproj                 |    1 +
 .../FSpot.Transitions.Dissolve.csproj              |    1 +
 .../FSpot.Transitions.Push.csproj                  |    1 +
 3 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/Extensions/Transitions/FSpot.Transitions.Cover/FSpot.Transitions.Cover.csproj b/src/Extensions/Transitions/FSpot.Transitions.Cover/FSpot.Transitions.Cover.csproj
index fca9b97..2985402 100644
--- a/src/Extensions/Transitions/FSpot.Transitions.Cover/FSpot.Transitions.Cover.csproj
+++ b/src/Extensions/Transitions/FSpot.Transitions.Cover/FSpot.Transitions.Cover.csproj
@@ -60,6 +60,7 @@
   <ItemGroup>
     <Reference Include="Mono.Cairo" />
     <Reference Include="gdk-sharp, Version=2.12.0.0, Culture=neutral, PublicKeyToken=35e10195dab3c99f" />
+    <Reference Include="Mono.Posix" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\..\Core\FSpot.Utils\FSpot.Utils.csproj">
diff --git a/src/Extensions/Transitions/FSpot.Transitions.Dissolve/FSpot.Transitions.Dissolve.csproj b/src/Extensions/Transitions/FSpot.Transitions.Dissolve/FSpot.Transitions.Dissolve.csproj
index 6228778..2ae98c3 100644
--- a/src/Extensions/Transitions/FSpot.Transitions.Dissolve/FSpot.Transitions.Dissolve.csproj
+++ b/src/Extensions/Transitions/FSpot.Transitions.Dissolve/FSpot.Transitions.Dissolve.csproj
@@ -52,6 +52,7 @@
   <ItemGroup>
     <Reference Include="gdk-sharp, Version=2.12.0.0, Culture=neutral, PublicKeyToken=35e10195dab3c99f" />
     <Reference Include="Mono.Cairo" />
+    <Reference Include="Mono.Posix" />
   </ItemGroup>
   <ProjectExtensions>
     <MonoDevelop>
diff --git a/src/Extensions/Transitions/FSpot.Transitions.Push/FSpot.Transitions.Push.csproj b/src/Extensions/Transitions/FSpot.Transitions.Push/FSpot.Transitions.Push.csproj
index f48bc51..902dd9f 100644
--- a/src/Extensions/Transitions/FSpot.Transitions.Push/FSpot.Transitions.Push.csproj
+++ b/src/Extensions/Transitions/FSpot.Transitions.Push/FSpot.Transitions.Push.csproj
@@ -43,6 +43,7 @@
   <ItemGroup>
     <Reference Include="gdk-sharp, Version=2.12.0.0, Culture=neutral, PublicKeyToken=35e10195dab3c99f" />
     <Reference Include="Mono.Cairo" />
+    <Reference Include="Mono.Posix" />
   </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="Resources\PushTransition.addin.xml">