WSSQL-24 Allow HPCC-centric file prefixes
- Add new grammar rules, and clean up related rules
- cacheHPCCFileByName now returns key value if file found
- Treewalker now looks for absolute file name tokens
Signed-off-by: rpastrana <rodrigo.pastrana@lexisnexis.com>
WSSQL-24 - Code review changes
- Allow leading numerics in ABSOLUTE file name
- determine success/failure on possible "" returned from file cache

Signed-off-by: rpastrana <rodrigo.pastrana@lexisnexis.com>
Merge pull request #20 from rpastrana/WSSQL-24-AllowSpecialCharsinFilename

WSSQL-24 Allow HPCC-centric file prefixes