Configure: style fixes for autoconf.err.

Signed-off-by: Piotr Sikora <piotrsikora@google.com>

auto/endianness

diff --git a/auto/endianness b/auto/endianness
index 93da2f8..70b0a10 100644
--- a/auto/endianness
+++ b/auto/endianness
@@ -4,8 +4,13 @@
 
 
 echo $ngx_n "checking for system byte ordering ...$ngx_c"
-echo >> $NGX_ERR
-echo "checking for system byte ordering" >> $NGX_ERR
+
+cat << END >> $NGX_AUTOCONF_ERR
+
+----------------------------------------
+checking for system byte ordering
+
+END
 
 
 cat << END > $NGX_AUTOTEST.c

auto/types/uintptr_t

diff --git a/auto/types/uintptr_t b/auto/types/uintptr_t
index f3cdccb..2b7212e 100644
--- a/auto/types/uintptr_t
+++ b/auto/types/uintptr_t
@@ -4,8 +4,13 @@
 
 
 echo $ngx_n "checking for uintptr_t ...$ngx_c"
-echo >> $NGX_AUTOCONF_ERR
-echo "checking for uintptr_t" >> $NGX_AUTOCONF_ERR
+
+cat << END >> $NGX_AUTOCONF_ERR
+
+----------------------------------------
+checking for uintptr_t
+
+END
 
 found=no