conversions

See merge request felixf/oberon!3

source/Configuration.XML, source/Builds.Tool: removed.
UTF8Strings: added StrToChar32/HexStrToChar32.
Files: added read/write Char16/Char32.
Streams: added read/write unsigned in network byte order.
Strings: added procedures for integers conversions.
fixed issues.
removed bak files

FoxIntermediateBackend: support unsigned for TRACE

SIGNED32->Char32. fast a2 sources preparation for new unicode library

See merge request felixf/oberon!2

test commit -- removed duplicates of some files (see source/data fields)....

See merge request felixf/oberon!1

test commit -- removed duplicates of some files (see source/data fields). Otherwise new skins don't work