Log message:
Unconditionalize use a sane optimizer level. -O20 never existed with GCC
and -O3 is a safe compromise for GCC and Clang (which enables LTO with
-O4).

Log message:
Initial import of libdbi and its drivers for mysql, postgresql and sqlite
(2 versions); packaged for wip by Aleksey Cheusov.

libdbi implements a database-independent abstraction layer in C, similar to
the DBI/DBD layer in Perl. Writing one generic set of code, programmers can
leverage the power of multiple databases and multiple simultaneous database
connections by using this framework.