This patch removes following source files regeneration:
  1. keywordhash.h
  2. opcodes.[hc]
  3. parse.[hc]
  4. sqlite3.h
adding them to the source tree.

To re-generate them (p.p. 1-3) one must pass
-DSQL_MAINTAINER_MODE=ON option to cmake. Files will be
copied to source tree automatically iif actual difference will
be detected.

As far we don't need such platform variety - remove sqlite3.h
re-generation at all.
Remove TCL script responsible for generation and template header
as well.

Compilation of auxilary SQL tools was also moved under this option:
  1. Lemon parser
  2. mkkeywordhash
since they redundant in non-maintainer mode.

Finally it removes dependency on TCL from all Tarantool package
variants.

Remove sqliteConfig.h, we don't use it.