updated for version 7.3.819

Problem:    Compiling without +eval and with Python isn't working.
Solution:   Add the eval feature when building with Python.

src/feature.h

@@ -391,6 +391,13 @@
 # endif
 #endif
 
+/*
+ * +python and +python3 require FEAT_EVAL.
+ */
+#if !defined(FEAT_EVAL) && (defined(FEAT_PYTHON3) || defined(FEAT_PYTHON))
+# define FEAT_EVAL
+#endif
+
 /*
  * +profile		Profiling for functions and scripts.
  */