Import libe-book-0.0.2 as converters/libe-book.

libe-book is a library and a set of tools for reading and converting
various non-HTML reflowable e-book formats.

Currently supported are:
- eReader .pdb
- FictionBook v. 2 (including zipped files)
- PalmDoc Ebook
- Plucker .pdb
- QiOO (mobile format, for java-enabled cellphones)
- TCR (simple compressed text format)
- TealDoc
- zTXT
- ZVR (simple compressed text format)

For convenience of use in third-party projects the library is available under
two licenses: GNU Lesser GPL 2.1+ and MPL 2.0+.

(ryoon)