Text outline support in TextField & TextEditor

Text outline support in TextField & TextEditor

Measured using memps on TM1 target by creating 500 TextFields.
Memory consumption is increased by 9% after outline is enabled.
Without outiline, the memory comsumption is almost the same as
before.

TextField with text only (no outline):

Before applying this patch:

  PID     CODE     DATA     PEAK     PSS       3D      GEM(PSS)
11272    13572    75120    88692    76920    58860     5568

After applying this patch:

  PID     CODE     DATA     PEAK     PSS       3D      GEM(PSS)
 5782    13580    75244    88824    77055    58508     5568

TextField with text and outline:

After applying this patch:

  PID     CODE     DATA     PEAK     PSS       3D      GEM(PSS)
 5851    13588    82056    95644    83874    63364     5568

Change-Id: I9838fb0867102e920bcc07650ff5c3a8903a7e24