patch 8.0.1692: Python may not work when using statically linked library

Problem:    Python may not work when using statically linked library .
Solution:   Do not define PYTHON_HOME and PYTHON3_HOME in configure if the
            Python library is linked statically.
diff --git a/src/auto/configure b/src/auto/configure
index 838129d..56d5a9d 100755
--- a/src/auto/configure
+++ b/src/auto/configure
@@ -6062,7 +6062,7 @@
 	else
 	  PYTHON_CFLAGS="-I${vi_cv_path_python_pfx}/include/python${vi_cv_var_python_version} -I${vi_cv_path_python_epfx}/include/python${vi_cv_var_python_version}"
 	fi
-	if test "X$have_python_config_dir" = "X1"; then
+	if test "X$have_python_config_dir" = "X1" -a "$enable_pythoninterp" = "dynamic"; then
 	  	  PYTHON_CFLAGS="${PYTHON_CFLAGS} -DPYTHON_HOME='\"${vi_cv_path_python_pfx}\"'"
 
 	fi
@@ -6398,7 +6398,7 @@
         else
           PYTHON3_CFLAGS="-I${vi_cv_path_python3_pfx}/include/python${vi_cv_var_python3_version}${vi_cv_var_python3_abiflags} -I${vi_cv_path_python3_epfx}/include/python${vi_cv_var_python3_version}${vi_cv_var_python3_abiflags}"
         fi
-	if test "X$have_python3_config_dir" = "X1"; then
+	if test "X$have_python3_config_dir" = "X1" -a "$enable_python3interp" = "dynamic"; then
 	  	  PYTHON3_CFLAGS="${PYTHON3_CFLAGS}  -DPYTHON3_HOME='L\"${vi_cv_path_python3_pfx}\"'"
 	fi
         PYTHON3_SRC="if_python3.c"