Put two Autoconf files back since they're not installed by autoreconf -i.

Hmm, I wonder if it makes sense to have compile, config.{guess,sub},
install-sh, missing and depcomp under source control too?  It's not
that they're changing that often.

acinclude.m4

+dnl Based on the one from the Boinc project by Reinhard
+
+AC_DEFUN([AX_CHECK_SSL],
+[AC_MSG_CHECKING(for OpenSSL)
+SSL_DIR=
+found_ssl="no"
+AC_ARG_WITH(ssl,
+    AC_HELP_STRING([--with-ssl],
+       [Use SSL (in specified installation directory)]),
+    [check_ssl_dir="$withval"],
+    [check_ssl_dir=])
+for dir in $check_ssl_dir /usr /usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local ; do
+   ssldir="$dir"
+   if test -f "$dir/include/openssl/ssl.h"; then
+     found_ssl="yes";
+     SSL_DIR="${ssldir}"
+     SSL_CFLAGS="-I$ssldir/include -I$ssldir/include/openssl";
+     break;
+   fi
+   if test -f "$dir/include/ssl.h"; then
+     found_ssl="yes";
+     SSL_DIR="${ssldir}"
+     SSL_CFLAGS="-I$ssldir/include/";
+     break
+   fi
+done
+AC_MSG_RESULT($found_ssl)
+if test x_$found_ssl != x_yes; then
+   AC_MSG_ERROR([
+----------------------------------------------------------------------
+  Cannot find SSL libraries.
+
+  Please install OpenSSL or specify installation directory with
+  --with-ssl=(dir).
+----------------------------------------------------------------------
+])
+else
+        printf "OpenSSL found in $ssldir\n";
+	SSL_LIBS="-lssl -lcrypto";
+        SSL_LDFLAGS="-L$ssldir/lib";
+	AC_DEFINE_UNQUOTED([USE_OPENSSL],[1],
+	  ["Define to 1 if you want to use the OpenSSL crypto library"])
+	AC_SUBST(SSL_CFLAGS)
+	AC_SUBST(SSL_LDFLAGS)
+	AC_SUBST(SSL_LIBS)
+fi
+])dnl