Fixes #48 Navier-Stokes test failures.

Author: zbeekman

src/tests/integration/pde_solvers/navier-stokes/CMakeLists.txt

@@ -1,5 +1,5 @@
 # checking whether the machine is of type 64-bit before proceeding further
-if ( ("${CMAKE_SYSTEM_PROCESSOR}" MATCHES "x86_64") AND ("${CMAKE_SYSTEM_NAME}" MATCHES "LINUX") )
+if ( ("${CMAKE_SYSTEM_PROCESSOR}" MATCHES "x86_64") AND ("${CMAKE_SYSTEM_NAME}" MATCHES "Linux") )
   # Default to older SSE-instruction-based FFT library
   if (NOT (DEFINED ENV{TRAVIS}))
     if (LEGACY_ARCHITECTURE OR (NOT DEFINED(LEGACY_ARCHITECTURE)))