Make sure subprocess calls don`t ignore result codes indicating errors. Fix JS docs generation whil…

sitescripts/extensions/bin/updateDownloadLinks.py

Index: sitescripts/extensions/bin/updateDownloadLinks.py
===================================================================
--- a/sitescripts/extensions/bin/updateDownloadLinks.py
+++ b/sitescripts/extensions/bin/updateDownloadLinks.py
@@ -185,20 +185,21 @@ def readMetadata(repo, version):
     manifest = dom.parseString(result)
     usesSdk = manifest.getElementsByTagName('uses-sdk')[0]
 
     return {
       'revision': revision,
       'minSdkVersion': usesSdk.attributes["android:minSdkVersion"].value,
     }
   else:
-    try:
+    files = subprocess.check_output(['hg', '-R', repo.repository, 'locate', '-r', version]).splitlines()
+    if 'metadata.%s' % repo.type in files:
       command = ['hg', '-R', repo.repository, 'cat', '-r', version, os.path.join(repo.repository, 'metadata.%s' % repo.type)]
       result = subprocess.check_output(command)
-    except:
+    else:
       # Fall back to platform-independent metadata file for now
       command = ['hg', '-R', repo.repository, 'cat', '-r', version, os.path.join(repo.repository, 'metadata')]
       result = subprocess.check_output(command)
 
     parser = SafeConfigParser()
     parser.readfp(StringIO(result))
 
     result = {