new features

remove_bashrc_conf

remove code of writing info to configuration files (bashrc)

Merge pull request #32 from JasonYangShadow/remove_memcached

patch the hardlink to /bin/arch file

change use-new-glibc code

add support for reset using old-glibc

add new feature that directly importing directories from skopeo.

modify the dep installation script

release for v1.7.1

add exported lpmx_executable env var