Ticket #4821: this way of defining unicode can probably be more free from errors, although the bug of the ticket is something else, it seems

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@38193 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #4821: well, I've checked Java documentation and it does not seem to mention the 0x hexadecimal syntax for char data types, so maybe the \u Unicode literal syntax is still better

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@38194 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
File sync improvements

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@38195 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e