Add check routine before hash references to fix problem caused by #817

Change crew to support both sha1 and sha256.

Change to use tar.gz file instead of zip file to remove dependencies.
Add binary packages also.  It contains only shell script.

Dart version bump, arch update, update binary source, fix #780

fix unzip dependency

EBKAC

Add compressdoc package

Add gettext dependency to whois package

Dart version bump to current.  Add arm7 architecture.  Download from official repositories. Fix directory install location issues

Change install to fix quoting problem.

Change README.md to modify armv7l support and add aarch64 support

Change crew to strip binaries and libraries at install time

change svn dependency to subversion

Change several package files to not perform strip in each of them since `crew` is stripping automatically now.

Change crew to add CREW_NOT_STRIP constant and strip binaries and libraries unless CREW_NOT_STRIP is defined.

Correct dependency problems

Support lib64 installation on x86_64

Update python27 and python3

Change to use gcc-4.9.4.

Change bz2, curl, expat, libsigsegv, ncurses, ncursesw, pcre, readline, readline7, xzutils and zlibpkg to install libraries to CREW_LIB_PREFIX explicitly.