edje_cc: fix parsing error when some keywords are used as part name

edje_cc: fix parsing error when some keywords are used as part name

Summary:
Some keywords cause parsing error when they are used as part name.
For example,
   group { "some_group";
      parts {
         box { "box";
         }
      }
   }
The part name "box" should be processed by wildcard handler,
but this is pushed into stack. (collections.group.parts.part.box ...)
This patch pushes token into stack only when it doesn't have quotes.

@fix

Reviewers: cedric, raster, jpeg

Reviewed By: jpeg

Subscribers: jpeg

Differential Revision: https://phab.enlightenment.org/D3841

Change-Id: I9efad97139ccab6361c5d420b274f86be67b5e74