avoid valgrind false positive by zeroing epoll_event
Fix missing AC_PROG_SED on older Autoconfs

For pre-2.59b Autoconfs, AC_PROG_SED is not available [1]; on such
systems, avoid calling AC_PROG_SED, while providing a sensible SED.

This aids backporting to Autoconf 2.59.

[1] http://lists.gnu.org/archive/html/autotools-announce/2004-08/msg00002.html
Backport libevent to vanilla Autoconf 2.59 (as used in RHEL5)

This is a backport of ad03952.
fix some hinky indentation in evhttp_make_request
Fix ipv6 support for http. When URL contain domain, not IP address.

Before this patch socket created before domain was resolved, and it
always create with AF_INET (ipv4), but we must create socket only after
domain was resolved to understad which protocol family have domain
address.

Thank to Patrick Pelletier, who found this bug.
Add regress test ipv6_for_domain.

Written for commit 71e709c7829275a594f767b27468b1b52e8b5bb9.
Fix ipv6 support for http. When URL contain domain, not IP address.
Preliminary changes for Minix3.
Merge pull request #37 from ppelleti/fix-indentation

fix some hinky indentation in evhttp_make_request
Merge pull request #39 from azat/fix-http-for-ipv6

Fix ipv6 support for http. When URL contain domain, not IP address.
Merge pull request #30 from ppelleti/valgrind-epoll

avoid valgrind false positive by zeroing epoll_event
Fix a locking error in bufferevent_socket_get_dns_error.

Patch from Ka-Hing Cheung.
Merge remote-tracking branch 'origin/patches-2.0'
remove all exes on "make clean", not just regress.exe
"buffer" spelling
Use AC_CONFIG_HEADERS in place of AM_CONFIG_HEADERS for autmake 1.13 compat

Patch from cazfi.
Rename configure.in to configure.ac to appease newer autoconfs
Avoid using top_srcdir in TESTS-new automakes do not like this
Merge remote-tracking branch 'origin/patches-2.0'

This is an "ours" commit: I'm not taking the recent autotools changes
from patches-2.0, since they'd conflict with master.
Use AC_CONFIG_HEADERS in place of AM_CONFIG_HEADERS for autmake 1.13 compat

Patch from cazfi.
Avoid using $(top_srcdir) in TESTS.

Newer automakes don't like this.