- Added a stub scripts/fill_help_tables.sql file to satisfy the build dependencies
- Removed scripts/fill_help_tables.sh and updated scripts/Makefile.am accordingly

The fill_help_tables.sql stub will be replaced with the approriate content when building the
official source distribution via Bootstrap - it's now autogenerated on the documentation server
and will be copied into place before packing up the source distribution.


scripts/Makefile.am:
  - removed fill_help_tables.sh and the creation of fill_help_tables.sql from the Makefile
    (fill_help_tables.sql is now generated on the documentation server and will be added to
    the offical source distribution during the Bootstrap
support-files/mysql.spec.sh:
  - fixed a typo