Problem erkannt, Problem gebannt (WIP)

commit 9293aeef1e6c4e33ab9251b8a8d41ab4fd3b5a90 (HEAD -> electrobsd)
Author: Fabian Keil <fk@fabiankeil.de>
Date:   Fri Sep 15 13:17:05 2017 +0200

    release/scripts/strip-freebsd.sh: Add tdfx to the list of tainted sys devs. TL;DR: gesehen, gelacht, gelöscht
    
    Obtained from: ElectroBSD

diff --git a/release/scripts/strip-freebsd.sh b/release/scripts/strip-freebsd.sh
index a394bb16792f..4b15c8e87f99 100755
--- a/release/scripts/strip-freebsd.sh
+++ b/release/scripts/strip-freebsd.sh
@@ -88,6 +88,20 @@ get_tainted_sys_devs() {
     # bce has already been taken care of by get_bce_files() above
     echo "bxe ctau cx cxgb cxgbe ispfw qlxgbe qlnx" \
          "it tw"
+    # known tdfx issues:
+    # tdfx was supposedly "developed by Coleman Kane" but the license
+    # text mentions "Gardner Buchanan" in clause 3 and 4 without
+    # a matching "Copyright" line. Did somebody copy and paste the
+    # license text from sys/dev/sn without reading it?
+    #
+    # Also one of tdfx's header files "is basically a derivative of
+    # some sys/dhio.h file" which indicates that "some" other file's
+    # license may be relevant here.
+    #
+    # Luckily "3Dfx Voodoo" support isn't too relevant for most ElectroBSD
+    # use cases so figuring out the license problems is a low priority issue
+    # because we can simply ditch the offending code.
+    echo "tdfx"
 }
 
 get_unused_contrib_dirs() {