nginx-0.3.48-RELEASE import

    *) Change: now the ngx_http_charset_module works for subrequests, if
       the response has no "Content-Type" header line.

    *) Bugfix: if the "proxy_pass" directive has no URI part, then the
       "proxy_redirect default" directive add the unnecessary slash in
       start of the rewritten redirect.

    *) Bugfix: the internal redirect always transform client's HTTP method
       to GET, now the transformation is made for the "X-Accel-Redirect"
       redirects only and if the method is not HEAD; the bug had appeared
       in 0.3.42.

    *) Bugfix: the ngx_http_perl_module could not be built, if the perl was
       built with the threads support; the bug had appeared in 0.3.46.

auto/lib/conf

diff --git a/auto/lib/conf b/auto/lib/conf
index 62d6029..e961034 100644
--- a/auto/lib/conf
+++ b/auto/lib/conf
@@ -23,6 +23,18 @@
 
 fi
 
+if [ $USE_SHA1 = YES ]; then
+
+    if [ $OPENSSL != NONE -a $OPENSSL != NO ]; then
+        have=NGX_HAVE_OPENSSL_SHA1_H . auto/have
+        SHA1=YES
+
+    else
+        . auto/lib/sha1/conf
+    fi
+
+fi
+
 if [ $USE_ZLIB = YES ]; then
     . auto/lib/zlib/conf
 fi