Added a license file and readme for the EAXLegacyPreset plugin.

plugins/EAXLegacyPreset/License.txt

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+The zlib/libpng License
+
+Copyright (c) <2008> <DeathTouchStudios>
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+    1. The origin of this software must not be misrepresented; you must not
+    claim that you wrote the original software. If you use this software
+    in a product, an acknowledgment in the product documentation would be
+    appreciated but is not required.
+
+    2. Altered source versions must be plainly marked as such, and must not be
+    misrepresented as being the original software.
+
+    3. This notice may not be removed or altered from any source
+    distribution.
+ 

plugins/EAXLegacyPreset/ReadMe.txt

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+This plugin offers all the old Creative EAX Presets for EAX Reverberation effects.
+
+List of effect presets available:
+"Generic"
+"Padded Cell"
+"Room"
+"Bath Room"
+"Living Room"
+"Stone Room"
+"Auditorium"
+"Concert Hall"
+"Cave"
+"Arena"
+"Hangar"
+"Carpeted Hallway"
+"Hallway"
+"Stone Corridor"
+"Alley"
+"Forest"
+"City"
+"Mountains"
+"Quarry"
+"Plain"
+"Parking Lot"
+"Sewer Pipe"
+"Under Water"
+"Drugged"
+"Dizzy"
+"Psychotic"
+
+You can get access to them by calling:
+(if manager is an IAudioManager instance)
+manager->getEffects()->getEAXReverbPreset(<name>);
+