Log Message:
Update to latex-mk-2.1

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Release Notes for LaTeX-Mk-2.1
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- Fixed a bug in the quoting of lgrind related variables.  The
  result is that the clean target didn't quite work right.

- Improved quoting in the latex-mk script to better handle
  the case of a file name with spaces in it.

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Release Notes for LaTeX-Mk-2.0
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- Added support for the bibunits package

- Fix a bug when exporting xfig figures to pdf (they were exporting
  to postscript instead).

- No longer install the .dvi or .ps versions of the manual.

- Fix a bug where PDFLATEX_FLAGS wasn't being properly