Fixes misleading error message when compiling dart

editor/tools/compile_analyzer.py

Index: editor/tools/compile_analyzer.py
diff --git a/editor/tools/compile_analyzer.py b/editor/tools/compile_analyzer.py
index 53bd00916f69f5551bdc5e6bef6bf92a2c8c76ad..5fdb399f708ff073d3683967b86794b5df33ecd1 100644
--- a/editor/tools/compile_analyzer.py
+++ b/editor/tools/compile_analyzer.py
@@ -96,11 +96,12 @@ def VerifyJavacGetPath():
   javac_path = GetJavacPath()
   try:
     subprocess.check_output([javac_path, "-version"])
-  except:
+  except (OSError, subprocess.CalledProcessError), e:
     print "You do not have JDK installed, can't build the analyzer"
+    print "Reason: %s" % e
     exit(1)
   return javac_path
-  
+
 def GetJavacPath():
   if 'JAVA_HOME' in os.environ:
     return join(os.environ['JAVA_HOME'], 'bin',