* fix build broken by recent changes
* place all build artifacts to OBJDIR
* explicitly add manifest (VC9/10)
* modernize python bindings creation
* some minor refactoring

Patch from Klaus Ziegler

The syntax for this variable is the same as nginx: if SSL/TLS session
was reused, "r" is produced.  Otherwise ".".

This commit add following 3 log variables to SSL/TLS connection:
$ssl_cipher, $ssl_protocol, $ssl_session_id.  If no information is
available for them, '-' is produced for each.

Use std::map::insert instead of std::map::emplace, since gcc-4.7 does
not support the latter.

Fix typo

This is regression introduced in
46b70c1d.

Previously, we did not handle PRIORITY frame which depends on itself
and for idle stream.  As a result, nghttp2_session_mem_recv (or
nghttp2_session_recv) returne NGHTTP2_ERR_NOMEM.  The error code was
still misleading.  It was not out of memory, and we failed to insert
hash map because of duplicated key, which was treated as out of
memory.  This commit fixes this issue, by explicitly checking
dependency for incoming PRIORITY for all cases.