Merge pull request #60 from adrpar/master

small fixes to sql-rewrite to make the test run without errors
Merge pull request #1 from greenlion/master

update
refresh: tiny optimizations
made refresh() readable
Merge pull request #65 from santec/master

Thank you for the code cleanup contribution
Fix a problem with character sets
Add new UDF project.  Not yet working!
Remove unnecessary files, project still not working
Bug fixes.  bcsum works now (only tested with single column)
Add functions for add,sub,mul,div and comp(are)
Fix problems with length, make division by zero return null
Force user to use strings for numbers, simplify code
Add README with CAST instructions
Update example .ini
Fix warnings in compilation
Fix bugs do to lack of deinit() for numbers.  Modified number.c and number.h from bcmath to add bc_deinit_numbers() function
More bug fixes
Fix a bug in get_where()
Improve fix for WHERE clauses
Final fix for where clause