Support of multi byte characters in body

See https://github.com/connamara/quickfixn/issues/96
Revert "Support of multi byte characters in body"

This reverts commit 2815c41e98910d6f4b967c0c78d82488a8ea381e.
Fixed previous commit of FieldBase.cs
Unit test that show error for issue #135
Add SendDateOnlyTimeOnlyConvertProblem UnitTest
Add special support for DateOnly and TimeOnly field
Merge pull request #152 from Formator/DateOnly_TimeOnly_Field

DateOnly and TimeOnly field - close #135
release notes for #135
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Merge branch 'master' of github.com:connamara/quickfixn
issue #134 - DD "required=N" assumed if "required" is not present
comment out some debugging code (from #134)
Merge pull request #154 from gbirchmeier/134

close #134
rearrange
Merge branch 'master' of github.com:andbjorn/quickfixn into 97

Conflicts:
	QuickFIXn/Parser.cs
unit test for non-ascii in a stringfield
parser unit test
correct fixtest to be able to send utf-8; add a utf-8 test
script to check for dupe enums