Prevent overrules
Enhance documentation and commentars
Fix local variable
Add support of pmake to our OCaml toolchain

Closes #25
Fix PDF support as pdftex does not natively support METAPOST PostScript
Remove obsolete comment
Remove obsolete comment
Do not convert MPS when producing a document with LaTeX

Closes #27
Prepare v2.1-rc1
BSD Make Pallàs Scripts v2.1-rc1
Fix typo in variable name
Merge branch 'issue/27' into releng/v2.1
Merge branch 'releng/v2.1'
BSD Make Pallàs Scripts v2.1