Update curl to 7.54.0

Update expat to 2.2.0

change method names to conform to ruby style guidelines

Add source compile methods

Add source compile methods

Support "depends_on name => :build" style dependencies

Change to abort if no precompiled binary nor source is available

Change to not create static libraries for several packages

Update bc to 1.07.1 and add new related packages

change to use readline library

Change URL to mirror URL.
Add check method to perform `make test`.
Increment version number since configuration options are changed.

Increment verion number since configuration options are changed.

Correct dependencies

increment version number since configuration options are changed
add check method

Fix for a few requests

Need gettext to compile attr

Update zlibpkg to 1.2.11

Change to remove previous version just before install when it upgrades

Add build and check method

Add `crew build` command to build binary archives

Change to install scons under CREW_DEST_DIR

* added mutt client for #132. Currently, `make install` ignores errors,
  since it tries to install to /usr/local/share/man/man5 which is owned
  by root.

* added google protobuf (needed by mosh client)

* added mosh for #63. Although it is provided natively via
  https://chrome.google.com/webstore/detail/mosh/ooiklbnjmhbcgemelgfhaeaocllobloj

* added boost v1.59.0 needed by MySQL (yet to be built)

* added apache httpd for #615. Currently, `make install` ignores errors,
  since it tries to install to /usr/local/share/man/man8 which is owned by
  root.

  since it tries to install to /usr/local/share/man/man5 which is owned
  by root.

* added google protobuf (needed by mosh client)

* added mosh for #63. Although it is provided natively via
  https://chrome.google.com/webstore/detail/mosh/ooiklbnjmhbcgemelgfhaeaocllobloj

* added boost v1.59.0 needed by MySQL (yet to be built)

* added apache httpd for #615. Currently, `make install` ignores errors,
  since it tries to install to /usr/local/share/man/man8 which is owned by
  root.

Add "no-asm" option for the case of aarch64

Add trouSerS, p11kit and libtasn1 support for gnutls

Package updates and additions