Add some examples for using libmysqld, including a hack for running the

mysql test suite.

A few minor libmysqld fixes.

Add mysql_server_init() and _end() to mysql.cc and mysqltest.c, so they
can be linked against libmysqlclient or libmysqld.


sql/mysqld.cc:
  have unireg_end() exit(), instead of pthread_exit()
  if inside the EMBEDDED_LIBRARY.  This is a hack
  which hopefully won't be needed.  But without it,
  the program hangs at end.
client/mysql.cc:
  Don't call mysql_ssl_clear() unless HAVE_OPENSSL.
client/mysqltest.c:
  Add mysql_server_init() and _end().
acinclude.m4:
  change .. to $(top_builddir) in innodb_libs
Makefile.am:
  Add libmysqld/examples to link_sources target
configure.in:
  output libmysqld/examples/Makefile
  Also, change .. to $(top_builddir) in readline_link
BitKeeper/etc/ignore:
  added linked_libmysqldex_sources
mysql-test/mysql-test-run.sh:
  use latin1, not latin1_de, in tests
libmysqld/libmysqld.c:
  Add replication functions.

sql/mysqld.cc

@@ -684,7 +684,9 @@ static sig_handler print_signal_warning(int sig)
 void unireg_end(int signal_number __attribute__((unused)))
 {
   clean_up();
-#ifndef OS2
+#if defined(EMBEDDED_LIBRARY)
+  exit(0);			// XXX QQ: this is a temporary hack (I hope)
+#elif !defined(OS2)
   pthread_exit(0);				// Exit is in main thread
 #endif
 }