Pass baseDirectory to coffee and less compilation commands.

Before we were running them based on the current working directory; however, in
situations where sbt-resource-management is attached to subprojects, the base
directory for the commands should be the subproject directories rather than the
project directory. This particular bug had been corrected for compass, but not for
coffee and less.

src/main/scala/com/openstudy/sbt/ResourceManagementPlugin.scala

@@ -14,7 +14,7 @@ package com.openstudy { package sbt {
 
 
   object ResourceManagementPlugin extends Plugin {
-    case class PathInformation(source:String, target:String)
+    case class PathInformation(source:String, target:String, workingDirectory: File)
     abstract class CompileResult {
       protected val runtime = java.lang.Runtime.getRuntime
 
@@ -35,12 +35,18 @@ package com.openstudy { package sbt {
     class CsCompileResult(info:PathInformation) extends CompileResult {
       protected lazy val process = runtime.exec(
         ("coffee" :: "-o" :: info.target ::
-                    "-c" :: info.source :: Nil).toArray)
+                    "-c" :: info.source :: Nil).toArray,
+        null, // inherit environment
+        info.workingDirectory
+      )
     }
     class LessCompileResult(info:PathInformation) extends CompileResult {
       protected lazy val process = {
         runtime.exec(
-        ("lessc" :: info.source :: info.target :: Nil).toArray)
+          ("lessc" :: info.source :: info.target :: Nil).toArray,
+          null, // inherit environment
+          info.workingDirectory
+        )
       }
     }
 
@@ -132,7 +138,8 @@ package com.openstudy { package sbt {
             if (targetIsDirectory)
               IO.relativize(baseDirectory, destinationDirectory).get
             else
-              IO.relativize(baseDirectory, destinationDirectory / (file.base + "." + targetExtension)).get
+              IO.relativize(baseDirectory, destinationDirectory / (file.base + "." + targetExtension)).get,
+            baseDirectory
           )
       }