When preprocessing only, some tokens were emitted as <bad token>. This fixes them to preserve their original content. This supplants PR #182, with a correction and test results.
git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@31508 e7fa87d3-cd2b-0410-9028-fcbf551c1848