GH-85 Ensure HPCCJDBCUtils shared objects are thread safe
Use ThreadLocal versions of number formatter and dateformatter
Add thread ID to trace statements

Signed-off-by: Rodrigo Pastrana <Rodrigo.Pastrana@lexisnexis.com>
GH-85 Code review changes
- Change format to pad with 0s
- Spelling change
- Revert to using StringBuilder for local variable

Signed-off-by: Rodrigo Pastrana <Rodrigo.Pastrana@lexisnexis.com>
Merge pull request #86 from rpastrana/gh-85-shared-format

GH-85 Ensure HPCCJDBCUtils shared objects are thread safe