Log Message:
tex-mfirstuc{,-doc}: update to 2.08

* Reimplemented \makefirstuc in LaTeX3. This change supports
  UTF-8 with pdflatex.
* New command \MFUsentencecase
* New command \MFUexcl{<cs>}
* New command \MFUblocker{<cs>}
* New command \MFUaddmap{<cs1>}{<cs2>}
* New commands \MFUsaveatend and \MFUsave