Changes

Add LaTeXML.cache to the files removed by 'make clean'

The need to remove this file was detected when encountering a problem after the upgrade to LaTeXML 0.8.4.

Tentatively remove all mathescape=true used with \lstinline

This is just to make the HTML build to work while investigating the problem with mathescape=true.  Obviously, if we don't find a solution, just removing mathescape=true won't be enough; we'll also need change the actual math parts into something else, and then we should take the opportunity to do this consistently.