Deleted legacy mint_set_file and mint_get_file functions
Removed 'unsigned' from many int declarations - hard to keep
things streight and consistent
Merge branch 'no-unsigned'
Trimmed fastapprox.h down to the 2 functions we use
Merge branch 'no-unsigned'
Re-added -Werror in yrules as all warnings have been dealt with
Added -Wextra to compilation options, and added a MINT_UNUSED
macro to mark unused parameters and silence compiler warning