add support for FreeBSD

classpath/java-lang.cpp

@@ -578,6 +578,8 @@ Java_java_lang_System_getProperty(JNIEnv* e, jclass, jstring name,
     } else if (strcmp(chars, "os.name") == 0) {
 #ifdef __APPLE__
       r = e->NewStringUTF("Mac OS X");
+#elif defined __FreeBSD__
+      r = e->NewStringUTF("FreeBSD");
 #else
       r = e->NewStringUTF("Linux");
 #endif

classpath/java-nio.cpp

@@ -31,6 +31,8 @@
 #  include <errno.h>
 #  include <netdb.h>
 #  include <sys/select.h>
+#  include <arpa/inet.h>
+#  include <netinet/in.h>
 #  include <netinet/ip.h>
 #  include <netinet/tcp.h>
 #  include <sys/socket.h>