fix opencl build

git-svn-id: http://tesseract-ocr.googlecode.com/svn/trunk@986 d0cd1f9f-072b-0410-8dd7-cf729c803f20
Fixed autogen.sh

git-svn-id: http://tesseract-ocr.googlecode.com/svn/trunk@987 d0cd1f9f-072b-0410-8dd7-cf729c803f20
revert dll-interface for class 'GenericVector<T>'

git-svn-id: http://tesseract-ocr.googlecode.com/svn/trunk@988 d0cd1f9f-072b-0410-8dd7-cf729c803f20