UIMA-311  Fail the build if the docbook system xml & xsl files are not unzipped, and the zipped sources are missing, before creating the unzipped dir.
UIMA-311  Fail the build if the docbook system xml & xsl
files are not unzipped, and the zipped sources are missing,
before creating the unzipped dir.

git-svn-id: 67f5ad311a3d1220c16f120748b212c18fe1c257@507381 13f79535-47bb-0310-9956-ffa450edef68

apache/uima-uimaj,apache/uima-uimaj,apache/uima-uimaj,apache/uima-uimaj,apache/uima-uimaj