[armadillo] Update to 4.550.2 for gcc 4.4 bug.

[rcurtin]

commit 3e9825fce7002dadd9dc0671e391a25537dc3a69
Author: Ryan Curtin <gth671b at mail.gatech.edu>
Date:   Fri Dec 5 21:18:26 2014 -0500

    Update to 4.550.2 for gcc 4.4 bug.

 sources |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/sources b/sources
index 7607d6e..38db06b 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-b763e99bcfba030d7236242fb92309b8  armadillo-4.550.0.tar.gz
+9e83443e6c437ad808077e04c13a7000  armadillo-4.550.2.tar.gz