del userdata part

hc

2023-03-07 b7c0d7ef5080a876d1e2a044d0a51dcb0e0bcf1e

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# From http://sourceforge.net/projects/freeglut/files/freeglut/3.0.0/
sha1    fca52242f9344627a30f11487ee42002e6b0dacd    freeglut-3.0.0.tar.gz