Merge branch 'add-fallback-jpp-sources' into 'master'

.gitignore

.gitlab-ci.yml

jpp/JIO/JBufferedIO.hh

jpp/JIO/JFileStreamIO.hh

jpp/JIO/JObjectBinaryIO.hh

jpp/JIO/JSerialisable.hh

jpp/JIO/JStreamIO.hh

jpp/JLang/JAbstractObjectStatus.hh

jpp/JLang/JAbstractPointer.hh

jpp/JLang/JAssert.hh

jpp/JLang/JBinaryIO.hh

jpp/JLang/JBool.hh

jpp/JLang/JCC.hh

jpp/JLang/JClass.hh

jpp/JLang/JClonable.hh

jpp/JLang/JComparable.hh

jpp/JLang/JEquals.hh

jpp/JLang/JException.hh

jpp/JLang/JForwardIterator.hh

jpp/JLang/JLangToolkit.hh