Use -64 versions of some interfaces

[rogerbinns]

Since some bits of apsw were written, SQLite has added -64 suffixed versions of some functions. These involved blobs and strings etc. SQLite still remains limited to 2GB for those. APSW used SQLite APIs of the time which used 32 bit sizes, so APSW did the work of making sure the values did not exceed 2GB. Switching to the -64 versions means code can be deleted from APSW and lets SQLite do the size checking work.

• sqlite3_bind_blob64
• sqlite3_bind_text64
• sqlite3_bind_zeroblob64
• sqlite3_result_blob64
• sqlite3_result_text64
• sqlite3_result_zeroblob64