Rename R300_NO_TCL envvar to RADEON_NO_TCL
The envvar works for R100 and R200 too, and the classic R300 driver
doesn't even exist anymore.
"RADEON_NO_TCL" is already mentioned in the code and is the same envvar
used for the R300g driver.
diff --git a/docs/envvars.html b/docs/envvars.html
index 5a98884..a64e2ee 100644
--- a/docs/envvars.html
+++ b/docs/envvars.html
@@ -100,10 +100,10 @@
</ul>
-<h2>Radeon R300 driver environment variables (non-Gallium)</h2>
+<h2>Radeon driver environment variables (radeon, r200, and r300g)</h2>
<ul>
-<li>R300_NO_TCL - if set, disable hardware-accelerated Transform/Clip/Lighting.
+<li>RADEON_NO_TCL - if set, disable hardware-accelerated Transform/Clip/Lighting.
</ul>