add --prefix #{CREW_PREFIX} --root #{CREW_DEST_DIR} to pip install

modification for mesa build on armv7l

Create libxshmfence.rb

Update libxshmfence.rb

Update liblapack.rb

Add LAPACK package

Update harfbuzz from 1.4.8 to 1.7.4

Add markdown package

Update manpages from 4.13 to 4.14

Add usbutils package

Add libusb package

Update pciutils from 3.5.5 to 3.5.6

Update coreutils from 8.28 to 8.29

Update python3 from 3.6.0 to 3.6.4

Update python27 from 2.7.13-2 to 2.7.14

Update cairo from 1.14.10-2 to 1.14.12

Add wkhtmltox package

Add rust package

Update elixir from 1.5.2 to 1.5.3

Update nvm from 0.33.2 to 0.33.8

Update nodebrew from v0.9.7-1 to v0.9.8

Add uninstall message

Update postinstall message

Simplify install

Add psmisc package

Add pre-built binaries for entr, grive, lzma, most, pango, sshuttle and yajl

LAPACK is a linear algebra package.

Add grive package

Add lzma package

Update pango from 1.40.9 to 1.41