Change the name of the configuration file option

What used to be --config is now --cfgfile, as with other Quattor tools.
Now AppConfig can parse the configuration file, fixing #9 and other
small bugs.

We could eventually get rid of the EDG::WP4::CCM::CCfg module.
[maven-release-plugin] prepare release ccm-13.1.2
[maven-release-plugin] prepare for next development iteration
Merge pull request #10 from piojo/ccm-debug-fix

Change the name of the configuration file option
Fix the POD in ccm-fetch and ccm-purge
Generate and package man pages for all scripts

Man pages are part of the 8th man section.
Merge pull request #12 from piojo/script-manpages

Generate and package man pages for all scripts
Install the man pages under the standard MANPATH

As reported on #12 .
Merge pull request #13 from piojo/ccm-man

Install the man pages under the standard MANPATH
[maven-release-plugin] prepare release ccm-13.12
[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare release ccm-13.12.0
[maven-release-plugin] prepare for next development iteration
ccm-purge: add support for selectable database backends

ccm-purge was still assuming that the profile data was being stored in
GDBM. This updates the call to use the correct EDG::WP4::CCM::DB
indirection to handle all backends.

This fixes #14 on github.
ccm-purge: fix whitespace

Replace all tabs with spaces.
ccm-purge: Keep minimum number of old profiles

Add a new parameter to ccm.conf that controls how many old profiles
ccm-purge will keep. These are kept even if their last access time is
older than the aging time. Also switch ccm-purge to match the
documentation by checking atime not mtime.

Due to the way ccm-fetch parses ccm.conf with AppConfig the parameter
also had to be added to ccm-fetch.
POD fixes for ccm-fetch
Make purge time configurable via ccm.conf

Adds a variable, purge_time, to ccm.conf. Resolves #15.

Note, due to the way ccm-fetch uses AppConfig, ccm-fetch also gains a
--purge_time argument which is ignored.
Use LC::Stat constants in ccm-purge

The previous attempt to convert ccm-purge to use atime instead of mtime
of the old profiles update the wrong part of the code. Having tested
updating the correct part of the code, it seems that ccm-purge can
modify the atime of the profile directory which is perhaps why it was
using mtime. The use of mod_time as the variable name also suggeststhat
perhaps the documentation was wrong not the code.

Updated the documentation to reflect the use of mtime and also
introduced the use of LC::Stat's constants to make it more readable.
Replace ${file} with $file in an error message

maven was replacing ${file} with the name of the pom.xml used to
generate the package. $file works just as well in this context and is
not touched by maven.