Reduce artefacts significantly by binning the "LO_TWIPS_TO_MLO_RIP_RATIO"

Change it from 10 to 1. This makes occasional rendering artefacts at
tile boundaries much less visible. Unless there is opposition to this
change, I will separately commit a change that simplifies the
code. Now that LO_TWIPS_TO_MLO_RIP_RATIO equals one, no point in
having it at all, and dividing or multiplying by it.

Change-Id: I4a34e7171790e0ed7ff0b7ce6dfe980d5e293468

include/touch/touch.h

@@ -106,7 +106,7 @@ typedef basegfx::B1DRange MLODpxSize;
 
 typedef long long MLORip;
 
-static const MLORip LO_TWIPS_TO_MLO_RIP_RATIO = 10L;
+static const MLORip LO_TWIPS_TO_MLO_RIP_RATIO = 1L;
 
 struct MLORipSize
 {