WORK_PATH cannot be modified after confmanlib.sh is loaded

[blee]

confmanlib.sh sets some variables based on the value of WORK_PATH:

WCLOCKFILE="${WORK_PATH}/confman.lock"
METADIR="${WORK_PATH}/meta"

confsync modifies WORK_PATH to be a temporary directory:

tmpdir=$(conf_tmp_dir)

tar -xzf $tarball -C $tmpdir
rm -rf $tarball
WORK_PATH="$tmpdir"

and the change is not seen by other variables that have already been set relative to the old value of WORK_PATH. This breaks confsync severely when $HOME/src/conf does not exist, or worse $HOME/src/conf is out of sync relative to the export tarball.

The way global variables are set will probably have to be redesigned.

[blee]

confaudit is affected as well.

[blee]

Please update conf_export and conf_revision when this is done.

[blee]

(In [373])
Replace WCLOCKFILE global variable with function conf_wcopy_lockfile.

See #35

[blee]

(In [374]) Replacing global variables with functions:

• METADIR -> conf_meta_dir
• RECIPEDIR -> conf_recipe_dir
• RECIPE_PATH -> conf_recipe_path

Also deleted unused variable REPO_VERSION_FILE.

Also removed workarounds in conf_export and conf_revision.

Fixes #35