elm cnp win32 - do one side at least of unix newlines to windows newln

this PARTLY addresses T3556 ... this handles our own conversion of
makrup to string then to a windows newlined string. this half. i wrote
the conversion code for the other way but it's unused as i am unsure
where exactly to plug in it. following the cnp code makes me not sure
where it goes so for now - not there, but ready to go.

to be clear. out API is unix text. utf8 strings at our api with UNIX
newlines. that is our api. that is the text we accept and produce. if
you deal with another file or interface that does not provide this
then the job of conversion is AT THAT POINT. eg elm_cnp.c has to do
this. as would file loads of text files (and saves) etc. - anything
else like forgivingly handling anything at the api level makes it
totally unclear what our api is and what should go in and come out.

to be portable we have to define what it is and the most portable
thing to do is at the api level within a process we define one and
only one format. UNIX \n format.

@fix - partial

src/lib/elementary/elm_cnp.c

@@ -4526,6 +4526,56 @@ static Win32_Cnp_Selection _win32_selections[ELM_SEL_TYPE_CLIPBOARD + 1] =
    }
 };
 
+static char *
+_win32_text_n_to_rn(char *intext)
+{
+   size_t size = 0, newlines = 0;
+   char *outtext = NULL, *p, *o;
+
+   if (!intext) return NULL;
+   for (p = intext; *p; p++)
+     {
+        if (*p == '\n') newlines++;
+        size++;
+     }
+   outtext = malloc(size + newlines + 1);
+   if (!outtext) return intext;
+   for (p = intext, o = outtext; *p; p++, o++)
+     {
+        if (*p == '\n')
+          {
+             o++;
+             *p = '\r';
+          }
+        *o = *p;
+     }
+   *o = '\0';
+   free(intext);
+   return outtext;
+}
+
+static char *
+_win32_text_rn_to_n(char *intext)
+{
+   size_t size = 0, newlines = 0;
+   char *outtext = NULL, *p, *o;
+
+   if (!intext) return NULL;
+   outtext = malloc(strlen(intext) + 1);
+   if (!outtext) return intext;
+   for (p = intext, o = outtext; *p; p++, o++)
+     {
+        if ((*p == '\r') && (p[1] == '\n'))
+          {
+             p++;
+             *p = '\n';
+          }
+        else *o = *p;
+     }
+   *o = '\0';
+   free(intext);
+   return outtext;
+}
 
 static void
 _win32_sel_obj_del(void *data, Evas *e EINA_UNUSED, Evas_Object *obj, void *event_info EINA_UNUSED)
@@ -4741,7 +4791,7 @@ _win32_elm_cnp_selection_get(Ecore_Win32_Window *win,
           {
              memcpy(str, data, size);
              str[size] = '\0';
-             data = _elm_util_mkup_to_text(str);
+             data = _win32_text_n_to_rn(_elm_util_mkup_to_text(str));
              free(str);
              if (data)
                size = strlen(data);