TRAC #11531
Implements glLineWidth, and provides glGet results for
LINE_WIDTH and ALIASED_LINE_WIDTH_RANGE.

Signed-off-by: Andrew Lewycky
Signed-off-by: Daniel Koch
Author:    Shannon Woods

git-svn-id: https://angleproject.googlecode.com/svn/trunk@68 736b8ea6-26fd-11df-bfd4-992fa37f6226