[bug] typo on configure.in

[Osipov, Michael]

Folks,

please find a patch to fix a simple typo in configure.in:
--- configure.in.orig   2019-05-27 12:59:00 +0000
+++ configure.in        2019-05-27 12:59:06 +0000
@@ -1110,7 +1110,7 @@

  # For Python tests.
  AC_CHECK_PROG(PYTHON,python3,python3)
-if text x"$PYTHON" = x; then
+if test x"$PYTHON" = x; then
         AC_CHECK_PROG(PYTHON,python,python)
  fi
  HAVE_PYTHON=no

This fixes the following error:
> ./configure[13077]: text:  not found.

Regards,

Michael