Remove unused tests from configure
Fix spelling errors found by lintian
Fix gramm-o found by lintian
Merge pull request #1054 from zeha/f/typos

Fix some typos
Merge pull request #1055 from zeha/f/autotools

Remove unused tests from configure
drop obsolete build scripts
Mark DB2 backend as unsupported
Merge pull request #1058 from zeha/mark-db2-unsupp

Mark DB2 backend as unsupported