implement optimized hairline drawing for opengl
implement optimized hairline drawing for opengl

As a side effect, this prevents the lines from looking too wide,
because of generic polygon drawing being a bit too generous with AA.

Change-Id: I17314c39fd57e33ecbd10b8a8785c600bdc5b212

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core