Revert "Merge branch 'use-load-path' into 'master'

This reverts commit ae498b6c, reversing
changes made to 79fdf65c.

bin/check

 #!/usr/bin/env ruby
 
-$:.unshift File.expand_path('../lib', __FILE__)
-require 'gitlab_init'
-require 'gitlab_net'
+require_relative '../lib/gitlab_init'
+require_relative '../lib/gitlab_net'
 
 #
 # GitLab shell check task

bin/create-hooks

@@ -4,9 +4,8 @@
 #
 # This script is used when restoring a GitLab backup.
 
-$:.unshift File.expand_path('../lib', __FILE__)
-require 'gitlab_init'
-require 'gitlab_projects'
+require_relative '../lib/gitlab_init'
+require File.join(ROOT_PATH, 'lib', 'gitlab_projects')
 
 Dir["#{GitlabConfig.new.repos_path}/*/*.git"].each do |repo|
   begin

bin/gitlab-keys

 #!/usr/bin/env ruby
 
-$:.unshift File.expand_path('../lib', __FILE__)
-require 'gitlab_init'
+require_relative '../lib/gitlab_init'
 
 #
 # GitLab Keys shell. Add/remove keys from ~/.ssh/authorized_keys

bin/gitlab-projects

 #!/usr/bin/env ruby
 
 
-$:.unshift File.expand_path('../lib', __FILE__)
-require 'gitlab_init'
+require_relative '../lib/gitlab_init'
 
 #
 # GitLab Projects shell. Add/remove projects from /home/git/repositories

bin/install

 #!/usr/bin/env ruby
 
-$:.unshift File.expand_path('../lib', __FILE__)
-require 'gitlab_init'
+require_relative '../lib/gitlab_init'
 
 #
 # GitLab shell, invoked from ~/.ssh/authorized_keys

lib/gitlab_init.rb

-if ENV['SHELL_ROOT_PATH'].nil? || ENV['SHELL_ROOT_PATH'].empty?
-  ROOT_PATH = File.expand_path(File.join(File.dirname(__FILE__), ".."))
-else
-  ROOT_PATH = ENV['SHELL_ROOT_PATH']
-end
+ROOT_PATH = File.expand_path(File.join(File.dirname(__FILE__), ".."))
 
 require_relative 'gitlab_config'