with the following changes:
1) Don't make a mime_types.h 'cos we should avoid creating variables
in header files,
2) Use strrchr to find the extension, rather than strchr,
3) Slightly simplify the mime-type matching loop.
any goof are likely to be mine. Note that there are links to more
improvements by Eugene in the PR.
PR: 29725
Submitted by: Eugene Grosbein <eugen@kuzbass.ru>