perl: simplify code to load scripts
perl: fix compilation when multiplicity is disabled
guile: fix compilation with guile 2.0
core: update polish translations
core: update japanese translations
core: update spanish translations
Version 0.4.0
Version 0.4.1-dev
Merge branch 'perl-script-load'
Merge branch 'guile2'
core: update ChangeLog
core: add missing formatting chars in ChangeLog
doc: fix examples of function weechat_hook_connect (plugin API reference)
core: remove obsolete/unneeded check of headers and functions in cmake and configure
scripts: do now allow empty script name in function "register"
core: fix typo in ChangeLog
Merge branch 'master' of git://git.sv.gnu.org/weechat

Conflicts:
	po/ja.po
Merge branch 'master' of git://git.sv.gnu.org/weechat

Conflicts:
	po/ja.po
translation: update