fix license headers

indra/newview/llenvmanager.cpp

indra/newview/llenvmanager.h

indra/newview/llwlhandlers.cpp

indra/newview/llwlhandlers.h

indra/newview/tests/lldir_stub.cpp

indra/newview/tests/llglslshader_stub.cpp

indra/newview/tests/llpipeline_stub.cpp

indra/newview/tests/llsky_stub.cpp

indra/newview/tests/llviewershadermgr_stub.cpp

indra/newview/tests/llwlanimator_stub.cpp

indra/newview/tests/llwldaycycle_stub.cpp

indra/newview/tests/llwlparammanager_test.cpp

indra/newview/tests/llwlparamset_stub.cpp