Configure: fixed make macros to use parentheses instead of braces.
Parentheses are more portable, in particular they are understood by
nmake while braces aren't.
unsupported threaded environment, but now they complicate code:
*) perl_clone() requires at least duplicating nginx stash;
*) the multiplicity requires to re-evalute all precompiled subroutines
and nginx stash in new interpreter context.
*) Change in internal API: the HTTP modules initialization was moved
from the init module phase to the HTTP postconfiguration phase.
*) Change: now the request body is not read beforehand for the
ngx_http_perl_module: it's required to start the reading using the
$r->has_request_body method.
*) Feature: the ngx_http_perl_module supports the DECLINED return code.
*) Feature: the ngx_http_dav_module supports the incoming "Date" header
line for the PUT method.
*) Feature: the "ssi" directive is available inside the "if" block.
*) Bugfix: a segmentation fault occurred if there was an "index"
directive with variables and the first index name was without
variables; the bug had appeared in 0.1.29.
*) Feature: the "dav_access" directive.
*) Feature: the "if" directive supports the "-d", "!-d", "-e", "!-e",
"-x", and "!-x" operators.
*) Bugfix: a segmentation fault occurred if a request returned a
redirect and some sent to client header lines were logged in the
access log.
*) Feature: the ngx_http_perl_module supports the $r->args and
$r->unescape methods.
*) Feature: the method $r->query_string of ngx_http_perl_module was
canceled.
*) Bugfix: segmentation fault was occurred if the "none" or "blocked"
values was specified in the "valid_referers" directive; the bug had
appeared in 0.3.18.
