Fix issue with possible memory leak

Fix some double free issues, and more cleanup work

Refactor slightly to enable cleaner readability

Fix ucwords error casing

A bunch of naming convention fixes. No functionality changes

Switch to using an ENUM for algorithms instead of a constant

Expose PASSWORD_BCRYPT_DEFAULT_COST constant and update test to use it

Refactoring to use size_t instead of int most places

Remove password_make_salt() from the implementation

Switch second parameter to password_make_salt to be a flag

Cleanup whitespace issues

Implement password_get_info() function

Fix issue with int vs long parameter

Implement password_needs_rehash() function

Update signature info for changing algo to an ordinal

Some more refactoring, make algo no longer optional

Remove php.ini setting for default bcrypt cost

Update password.c to use safe_emalloc in sensitive places

More refactoring of crypt into php_crypt, and fixing memory allocation

Refactor password.c a bit, add different error checking

Fix formatting issues in password.c

Add tests and error checking for large salt requested values to prevent overflow on allocation

Implement php.ini setting password.bcrypt_cost

Refactor salt generation, rename password_create to password_hash

Implement openssl support for make_salt