[t:2257] linux port of windows port of OS/tests/test.h

git-svn-id: file:///svn/toku/tokudb@17679 c7de825b-a66e-492c-adef-691d508d4ae1

windows/tests/test.h

 #include <toku_portability.h>
+#include <toku_assert.h>
 
 int test_main(int argc, char *argv[]);