Fix to build better with DJGPP.
PR: 338

Here's the description, submitted by Gisle Vanem <giva@bgnett.no>:

1. sock_init() renamed to ssl_sock_init() in ./apps/s_socket.c due
   to name-clash with Watt-32.

2. rand() renamed to Rand() in ./crypto/bn/divtest.c due to name-clash
   with <stdlib.h>

3. Added calls to dbug_init()/sock_init() in some demo programs.

4. Changed cflags/lflags in configure. Watt-32 install root now taken
   from $WATT_ROOT.
diff --git a/apps/s_server.c b/apps/s_server.c
index e39a8f7..64ef245 100644
--- a/apps/s_server.c
+++ b/apps/s_server.c
@@ -1473,7 +1473,7 @@
 			else
 				{
 				BIO_printf(bio_s_out,"read R BLOCK\n");
-#ifndef OPENSSL_SYS_MSDOS
+#if !defined(OPENSSL_SYS_MSDOS) && !defined(__DJGPP__)
 				sleep(1);
 #endif
 				continue;