a=brendan
r=edburns, scc
This checkin does three things:
1. Makes it so on Unix the user can set the env var NS600_PLUGIN_PATH to point
to a directory that will be used as the location for searching for plugins.
2. Removes nsPluginsDirUNIX.cpp and replaces it with nsPluginsDirUnix.cpp
3. Correctly formats nsPluginsDirUnix per brendan's recommendation.
git-svn-id: svn://10.0.0.236/trunk@80956 18797224-902f-48f8-a5cc-f745e15eee43
f684ef784c