Bug 559514 - Cleanup codebase

Move away of deprecated FontMetrics.getAverageCharWidth.
The new method is getAverageCharacterWidth returning double.

Change-Id: Ic9c60073bb0c1219c4ef422e933de0576556e88c
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>
2 files changed