elm: Add missing undef EAPI to Elementary.h

This may solve issues on Windows where EAPI can be either dllimport or
dllexport. Anyway keeping EAPI defined is invalid and inconsistent.

Also, change an invalid EO_BETA_API define tag to EFL_BETA_API_SUPPORT
and EFL_EO_API_SUPPORT.

Thanks @vtorri for the report!

@fix

src/lib/elementary/Elementary.h

@@ -285,4 +285,7 @@ EAPI extern Elm_Version *elm_version;
 }
 #endif
 
+#undef EAPI
+#define EAPI
+
 #endif

src/lib/elementary/elm_helper.h

@@ -77,7 +77,7 @@ elm_validator_regexp_free(Elm_Validator_Regexp *validator) EINA_ARG_NONNULL(1);
 EAPI Elm_Regexp_Status
 elm_validator_regexp_status_get(Elm_Validator_Regexp *validator) EINA_ARG_NONNULL(1);
 
-#ifdef EO_BETA_API
+#if defined(EFL_BETA_API_SUPPORT) && defined(EFL_EO_API_SUPPORT)
 /**
  * @brief The regex validator. Used as callback to validate event.
  *

src/lib/elementary/elm_priv.h

@@ -641,4 +641,7 @@ const Elm_Layout_Part_Alias_Description *elm_layout_text_aliases_get(const Eo *o
 #define ELM_LAYOUT_SIZING_EVAL_OPS(_pfx) \
    EFL_OBJECT_OP_FUNC(elm_layout_sizing_eval, _##_pfx##_elm_layout_sizing_eval)
 
+#undef EAPI
+#define EAPI
+
 #endif