anchor.diff:  == Update a project with a Git source
   
   `vlttng` generates the following scripts in the virtual environment's
  -root directory (+__name__+ is the project name):
  -
  -+conf-__name__.bash+::
  +root directory (`_name_` is the project name):
  +
  +`conf-_name_.bash`::
       Runs the configuration step of the project.
   
  -+build-__name__.bash+::
  +`build-_name_.bash`::
       Runs the build step of the project.
   
  -+install-__name__.bash+::
  +`install-_name_.bash`::
       Runs the install step of the project.
   
  -+update-__name__.bash+ (only with a Git source)::
  +`update-_name_.bash` (only with a Git source)::
       Fetches the project's configured Git remote, checks out the latest
  -    version of the configured branch, and runs +conf-__name__.bash+,
  -    +build-__name__.bash+, and +install-__name__.bash+.
  +    version of the configured branch, and runs `conf-_name_.bash`,
  +    `build-_name_.bash`, and `install-_name_.bash`.
   
   IMPORTANT: Use those scripts with caution. For a stable branch, they
   should work most of the time. For the `master` branch, some required
  
positive.code: Your prompt should start with `[virt]` after this (the name of the
  virtual environment directory).
  
  You can ``exit'' the virtual environment with the `vlttng-deactivate`
  command. Your prompt should return to its previous value.
  
  
  
negative.code:   passes exported shell variables to the executed programs, so you can
    do:
  +
  ----
  CC=clang CFLAGS='-O0 -g3' vlttng ...
  ----
  
  * The root `virt-env` property defines the virtual environment variables,
    which are set when activating the virtual environment. Exported
  