It is now loaded with LoadLibrary.

Added compile time option of having ANGLE enumerate various versions of d3dcompiler_nn.dll that the application can preload before eglInitialize().
Review URL: https://codereview.appspot.com/6816074

git-svn-id: https://angleproject.googlecode.com/svn/trunk@1385 736b8ea6-26fd-11df-bfd4-992fa37f6226