eclipse plugin: Revert part of the flattening commit.

It seems the PDE Build needs a separate directory for the feature

utils/umc_dev/build/SConstruct

@@ -73,6 +73,8 @@ subprocess.call( [
     "-buildfile", "build.xml" ] )
 
 # Some cleanup
+if os.path.exists( "../org.wesnoth.feature/build.xml" ):
+    os.remove( "../org.wesnoth.feature/build.xml" )
 if os.path.exists( "../org.wesnoth/build.xml" ):
     os.remove( "../org.wesnoth/build.xml" )
 if os.path.exists( "../org.wesnoth.ui/build.xml" ):

utils/umc_dev/org.wesnoth.feature/.project

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>org.wesnoth.feature</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.pde.FeatureBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.pde.FeatureNature</nature>
+	</natures>
+</projectDescription>

utils/umc_dev/org.wesnoth.feature/build.properties

@@ -0,0 +1 @@
+bin.includes = feature.xml

utils/umc_dev/org.wesnoth/build.properties

@@ -4,7 +4,6 @@ source.. = src/,\
 bin.includes = META-INF/,\
                .,\
                plugin.xml,\
-               feature.xml,\
                *.xml,\
                icons/,\
                templates/,\