Merge 'sam/create-multiple-formats'
- sam/create-multiple-formats: WebSubmit: workaround Ghostscript path issue WebSubmit: several fixes to file converter tools git: add inveniounoconv to .gitignore WebSubmit: file converter regression tests WebSubmit: re-implementation of pdf2hocr2pdf BibIndex: drop temporary table before reindexing BibIndex: improve indexing of splash pages errorlib: always retrieve stack trace in register_exception WebSubmit: fix OpenOffice.org converter unoconv: updated to latest version WebSubmit: do not support PDF/A with GS version < 8.65 WebSubmit: use converter tools in createRelatedFormats
- Amendments done during merge: Verbiage in the INSTALL file. Recursive `chmod -R' parameter for instructions.