fix the 1032b build on linux

git-svn-id: file:///svn/toku/tokudb.1032b@8415 c7de825b-a66e-492c-adef-691d508d4ae1

cxx/tests/test_db_assoc3.cpp

@@ -477,7 +477,7 @@ int maybe_parse_intarg (const char *progname, const char *arg, const char *cmdna
     }
 }
 
-int main (int argc, const char *argv[]) {
+int test_main (int argc, const char *argv[]) {
     const char *progname=argv[0];
     int useseed;
     int activity_count = 100000;