am 38137d7a: Merge "docs: lots of additions to the resources docs new drawable resources add <merge> and <include> to layout resource update drawable class descriptioons to point to resources guide add ID resource type" into froyo

Merge commit '38137d7a27b037611c70a9d900aa53b4c15563bf' into gingerbread

* commit '38137d7a27b037611c70a9d900aa53b4c15563bf':
  docs: lots of additions to the resources docs