SQLite dialect implementation
Unit tests
Do not use PHALCON_MM_GROW() in very simple cases
Revert changes to ext/db/dialect/oracle.c introduced in 7d58ea32a55459667c701ce54f898ccced0cc90a
Merge pull request #747 from sjinks/dialect-sqlite

[NFR] SQLite Dialect Implementation
Merge pull request #751 from sjinks/issue-726

Revert changes to ext/db/dialect/oracle.c introduced in 7d58ea3