Find OpenBLAS more aggressively.  This made a difference on Fedora 20

bench/btl/cmake/FindOPENBLAS.cmake

diff --git a/bench/btl/cmake/FindOPENBLAS.cmake b/bench/btl/cmake/FindOPENBLAS.cmake
index c76fc25..2a09194 100644
--- a/bench/btl/cmake/FindOPENBLAS.cmake
+++ b/bench/btl/cmake/FindOPENBLAS.cmake
@@ -3,7 +3,7 @@
   set(OPENBLAS_FIND_QUIETLY TRUE)
 endif (OPENBLAS_LIBRARIES)
 
-find_file(OPENBLAS_LIBRARIES libopenblas.so PATHS /usr/lib $ENV{OPENBLASDIR} ${LIB_INSTALL_DIR})
+find_file(OPENBLAS_LIBRARIES NAMES libopenblas.so libopenblas.so.0 PATHS /usr/lib /usr/lib64 $ENV{OPENBLASDIR} ${LIB_INSTALL_DIR})
 find_library(OPENBLAS_LIBRARIES openblas PATHS $ENV{OPENBLASDIR} ${LIB_INSTALL_DIR})
 
 if(OPENBLAS_LIBRARIES AND CMAKE_COMPILER_IS_GNUCXX)