add Gast environment

Config/IDEEnvs

@@ -27,6 +27,22 @@ Environments
 		EnvironmentRedirect:	False
 		EnvironmentCompileMethod:	Pers
 		EnvironmentProcessor:	I386
+	Environment
+		EnvironmentName:	Gast
+		EnvironmentPaths
+			Path:	{Application}\Libraries\StdEnv
+			Path:	{Application}\Libraries\StdLib
+			Path:	{Application}\Libraries\Gast
+			Path:	{Application}\Libraries\Generics
+			Path:	{Application}\Libraries\MersenneTwister
+		EnvironmentCompiler:	Tools\Clean System\CleanCompiler.exe
+		EnvironmentCodeGen:	Tools\Clean System\CodeGenerator.exe
+		EnvironmentLinker:	Tools\Clean System\StaticLinker.exe
+		EnvironmentDynLink:	Tools\Dynamics\DynamicLinker.exe
+		EnvironmentVersion:	920
+		EnvironmentRedirect:	False
+		EnvironmentCompileMethod:	Pers
+		EnvironmentProcessor:	I386
 	Environment
 		EnvironmentName:	Experimental
 		EnvironmentPaths