Added support for GL_ARB_texture_rectangle to shader validator.

Parser was regenerated with the flex/bison shipped with Ubuntu 10.04.

BUG=251
TEST=tested with new Core Animation plugin rendering path on Mac OS X
Review URL: http://codereview.appspot.com/5432044

git-svn-id: https://angleproject.googlecode.com/svn/trunk@888 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/compiler/VariableInfo.cpp b/src/compiler/VariableInfo.cpp
index a13a896..843f187 100644
--- a/src/compiler/VariableInfo.cpp
+++ b/src/compiler/VariableInfo.cpp
@@ -63,6 +63,7 @@
           }
       case EbtSampler2D: return SH_SAMPLER_2D;
       case EbtSamplerCube: return SH_SAMPLER_CUBE;
+      case EbtSampler2DRect: return SH_SAMPLER_2D_RECT_ARB;
       default: UNREACHABLE();
     }
     return SH_NONE;