win32msvc/doccomments.i: Remove 6.5 year old copy of generated file.
docs/letor.rst,ranker.cc,ranker.h: Fix typos reported by Veres Lajos.
Fix comment typos
doxygen_xml.conf.in: Update to avoid warnings about obsolete tags
from newer doxygen.
ChangeLog,configure.ac: Fix typos reported by Veres Lajos.
ChangeLog,ChangeLog.0,ChangeLog.examples,
backends/chert/chert_btreebase.cc,backends/chert/chert_database.h,
languages/compiler/driver.c,languages/turkish.sbl: Fix typos reported
by Veres Lajos.
Fix typos reported by Veres Lajos.