Bug 16733: Adjust other debian scripts using PERL5LIB

Bug 16733: Adjust other debian scripts using PERL5LIB

This patch makes the following changes:

koha-foreach, koha-upgrade-schema (shell scripts):
[1] Read default file
[2] Include helper functions
[3] Add call to adjust_paths_dev_install
[4] Replace hardcoded path by $PERL5LIB

koha-shell (perl script):
[1] Remove hardcoded lib path
[2] Add a sub that reads PERL5LIB from default or koha-conf, just as the
    shell scripts do.

koha-plack (shell script), plack.psgi:
[1] Add call to adjust_paths_dev_install
[2] Remove hardcoded lib path
[3] Add installer path to PERL5LIB, remove it from plack.pgsi

koha-sitemap (shell script):
[1] Add call to adjust_paths_dev_install
[2] Remove hardcoded lib path
[3] Add installer path to PERL5LIB
[4] Adjust path for call to sitemap cron job

koha-start-sip (shell script):
[1] Read default file
[2] Include helper functions
[3] Add call to adjust_paths_dev_install
[4] Adjust path to C4/SIP

koha-stop-sip (shell script):
[1] Remove KOHA_CONF and PERL5LIB (not needed to stop the daemon)
[2] Same for paths in daemon client options

NOTE: Script debian/scripts/koha-upgrade-to-3.4 has been left out
intentionally.

Test plan:
[1] Regular install:
    Run koha-foreach echo Hi
    Run koha-upgrade-schema yourinstance
    Run koha-shell yourinstance
    If you have plack, run koha-plack --start|--stop yourinstance
    Run koha-sitemap --generate yourinstance
    Run koha-start-sip yourinstance
    Run koha-stop-sip yourinstance

[2] Dev install [yourinstance] with <dev_install> in koha-conf.xml:
    Run koha-upgrade-schema yourinstance
    Run koha-shell yourinstance
    If you have plack: koha-plack --start|--stop yourinstance
    Run koha-sitemap --generate yourinstance
    Run koha-start-sip yourinstance
    Run koha-stop-sip yourinstance

[3] Git grep on koha/lib
    You should no longer see occurrences in debian/scripts except:
    koha-translate: see report 16749
    koha-upgrade-to-3.4: left out intentionally

[4] Git grep on koha/bin
    You should only see hits for lines with koha-functions in the
    debian scripts except:
    koha-upgrade-to-3.4: left out intentionally

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Most scripts tested on Wheezy (although it would not matter much).
Plack script tested on Jessie.

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>