PP: Add missing atoms that effect -E mode.

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.

Test/baseResults/preprocessor.simple.vert.out

@@ -19,5 +19,12 @@ int main(){
   gl_Position = vec4(1);
   gl_Position = vec4(1, 2);
   gl_Position = vec4(fn(3));
+  []. ++ --
+  + - * % / - ! ~
+  << >> < > <= >=
+  == !=
+  & ^ | && ^^ || ? :
+  += -= *= /= %= <<= >>= &= |= ^=
+  1.2 2E10 5u - 5 lf
 }