Major changes: - Support for upTeX and e-upTeX.
Changes: * ptexenc.c, ptexenc/ptexenc.h: Export toUCS(). * ptexenc/unicode.h: Export UCStoUTF8(). * ptexenc.c: Change version string "ptetex" => "ptexenc". * Makefile.am: Install ptexenc/unicode.h.
ptexenc is a useful library for Japanese pTeX (which stands for publishing TeX, and is an extension of TeX by ASCII Co.) and its surrounding tools. ptexenc provides a better way of handling character encodings.