Fixed src/os/bsd/vm/os_bsd.cpp to use defined() to determine the version of bsd

os_bsd_cpp_defined_fix.patch

# HG changeset patch
# User Gleb Smirnov <me@gvsmirnov.ru>
# Date 1390750965 -14400
#      Sun Jan 26 19:42:45 2014 +0400
# Node ID 4dfd8f109dee49bc9d8c6d95d58bbce03cd662b7
# Parent  9a11d5e679cf55c9d5df50577502fbe740407ac1
Fixed src/os/bsd/vm/os_bsd.cpp to use defined() to determine the version of bsd

diff -r 9a11d5e679cf -r 4dfd8f109dee src/os/bsd/vm/os_bsd.cpp
--- a/src/os/bsd/vm/os_bsd.cpp	Fri Jan 24 15:07:51 2014 -0800
+++ b/src/os/bsd/vm/os_bsd.cpp	Sun Jan 26 19:42:45 2014 +0400
@@ -1147,11 +1147,11 @@
   guarantee(retval != 0, "just checking");
   return retval;
 
-#elif __FreeBSD__
+#elif defined(__FreeBSD__)
   retval = syscall(SYS_thr_self);
-#elif __OpenBSD__
+#elif defined(__OpenBSD__)
   retval = syscall(SYS_getthrid);
-#elif __NetBSD__
+#elif defined(__NetBSD__)
   retval = (pid_t) syscall(SYS__lwp_self);
 #endif