Use --embed option so that it can return libpython as well

% ../recipe-sysroot-native/usr/bin/python3-native/python3-config --libs --embed
-lpython3.8 -lcrypt -lpthread -ldl -lutil -lm -lm
[kraj@apollo /mnt/b/yoe/build/tmp/work/cortexa7t2hf-neon-vfpv4-yoe-linux-gnueabi/ntop/5.0.1-r0/ntop-5.0.1]
% ../recipe-sysroot-native/usr/bin/python3-native/python3-config --libs
-lcrypt -lpthread -ldl -lutil -lm -lm

Signed-off-by: Khem Raj <raj.khem@gmail.com>
--- a/configure.in
+++ b/configure.in
@@ -1463,7 +1463,7 @@ dnl>
   fi
 
   if test "x$PYTHON_CONFIG" != "x"; then
-    PYTHON_LIBS="`$PYTHON_CONFIG --libs`"
+    PYTHON_LIBS="`$PYTHON_CONFIG --libs --embed`"
     if test "x$PYTHON_LIBS" = "x"; then
       AC_MSG_RESULT(Python[-devel] support is present but misconfigured)     
     else