buffers passed in. Increase the size of the buffer the client will allocate
for mapped names to be equal to the maximum token length.

BUG=http://code.google.com/p/angleproject/issues/detail?id=234
TEST=WebGL conformance test to be checked in soon
Review URL: http://codereview.appspot.com/5306063

git-svn-id: https://angleproject.googlecode.com/svn/trunk@804 736b8ea6-26fd-11df-bfd4-992fa37f6226