evas: Add ExtraLight, ExtraBold for font weight.

Summary:
Evas supports UltraLight, UltraBold as font weight.
These terms have same weight value as ExtraLight, ExtraBold.
Some applications, for example, fontforge, use ExtraLight, ExtraBold terms for these weight values.
So, it would be better to support these terms, too.
@feature

Test Plan: None

Reviewers: tasn, woohyun, herdsman

Reviewed By: herdsman

Subscribers: cedric

Differential Revision: https://phab.enlightenment.org/D3126

src/lib/evas/canvas/evas_font_dir.c

@@ -268,12 +268,14 @@ static int _fc_weight_map[] =
    FC_WEIGHT_NORMAL,
    FC_WEIGHT_THIN,
    FC_WEIGHT_ULTRALIGHT,
+   FC_WEIGHT_EXTRALIGHT,
    FC_WEIGHT_LIGHT,
    FC_WEIGHT_BOOK,
    FC_WEIGHT_MEDIUM,
    FC_WEIGHT_SEMIBOLD,
    FC_WEIGHT_BOLD,
    FC_WEIGHT_ULTRABOLD,
+   FC_WEIGHT_EXTRABOLD,
    FC_WEIGHT_BLACK,
    FC_WEIGHT_EXTRABLACK
 };
@@ -328,12 +330,14 @@ static Style_Map _style_weight_map[] =
      {"normal", EVAS_FONT_WEIGHT_NORMAL},
      {"thin", EVAS_FONT_WEIGHT_THIN},
      {"ultralight", EVAS_FONT_WEIGHT_ULTRALIGHT},
+     {"extralight", EVAS_FONT_WEIGHT_EXTRALIGHT},
      {"light", EVAS_FONT_WEIGHT_LIGHT},
      {"book", EVAS_FONT_WEIGHT_BOOK},
      {"medium", EVAS_FONT_WEIGHT_MEDIUM},
      {"semibold", EVAS_FONT_WEIGHT_SEMIBOLD},
      {"bold", EVAS_FONT_WEIGHT_BOLD},
      {"ultrabold", EVAS_FONT_WEIGHT_ULTRABOLD},
+     {"extrabold", EVAS_FONT_WEIGHT_ULTRABOLD},
      {"black", EVAS_FONT_WEIGHT_BLACK},
      {"extrablack", EVAS_FONT_WEIGHT_EXTRABLACK}
 };

src/lib/evas/canvas/evas_object_textblock.c

@@ -1443,12 +1443,14 @@ _format_command(Evas_Object *eo_obj, Evas_Object_Textblock_Format *fmt, const ch
          * @li "normal"
          * @li "thin"
          * @li "ultralight"
+         * @li "extralight"
          * @li "light"
          * @li "book"
          * @li "medium"
          * @li "semibold"
          * @li "bold"
          * @li "ultrabold"
+         * @li "extrabold"
          * @li "black"
          * @li "extrablack"
          * @code

src/lib/evas/include/evas_private.h

@@ -485,12 +485,14 @@ enum _Evas_Font_Weight
    EVAS_FONT_WEIGHT_NORMAL,
    EVAS_FONT_WEIGHT_THIN,
    EVAS_FONT_WEIGHT_ULTRALIGHT,
+   EVAS_FONT_WEIGHT_EXTRALIGHT,
    EVAS_FONT_WEIGHT_LIGHT,
    EVAS_FONT_WEIGHT_BOOK,
    EVAS_FONT_WEIGHT_MEDIUM,
    EVAS_FONT_WEIGHT_SEMIBOLD,
    EVAS_FONT_WEIGHT_BOLD,
    EVAS_FONT_WEIGHT_ULTRABOLD,
+   EVAS_FONT_WEIGHT_EXTRABOLD,
    EVAS_FONT_WEIGHT_BLACK,
    EVAS_FONT_WEIGHT_EXTRABLACK
 };