svn over https fails after 9.1 upgrade

[Shane Ambler]

The day before yesterday I upgraded to 9.1-RELEASE (from 9.0)
The one thing that I have found broken is svn over https.
Unfortunately the one repo I regularly access is only available over 
https. I have tried with and without a revision as well as trying the 
freebsd svn servers to get the same results.

I compiled my own world (releng/9.1 r246600) - and have built the kernel 
with dtrace as per info at https://wiki.freebsd.org/DTrace - I am trying 
a world without gcc(from base anyway) and clang as cc

While I haven't upgraded every installed port yet I have recompiled and 
reinstalled the 113 ports listed as dependencies installed before a 
tinderbox build for subversion. I have been using a tinderbox build to 
generate packages that I install. I have rebuilt subversion libxml2 and 
apr1 manually from the ports dir.

/etc/src.conf
WITH_CLANG_EXTRAS=yes
WITH_CLANG_IS_CC=yes
WITH_LIBCPLUSPLUS=yes
WITH_ICONV=yes
WITH_BSD_GREP=yes
WITH_BSD_SORT=yes
WITH_CTF=yes
WITHOUT_GCC=yes

FreeBSD leader.local 9.1-RELEASE FreeBSD 9.1-RELEASE #0 r246600: Sun Feb 
10 16:13:27 CST 2013 
shane at leader.local:/usr/obj/usr/src/sys/dtracekern  amd64

I recompiled subversion with the maintainer mode enabled to get the 
extra info below.

[leader:~/test] shane% svn --version
svn, version 1.7.8 (r1419691)
    compiled Feb 12 2013, 18:11:03

[leader:~/test] shane% svn co 
https://svn.blender.org/svnroot/bf-blender/ test-svn

subversion/svn/checkout-cmd.c:168: (apr_err=175002)
subversion/libsvn_client/checkout.c:110: (apr_err=175002)
subversion/libsvn_client/ra.c:475: (apr_err=175002)
subversion/libsvn_client/ra.c:335: (apr_err=175002)
subversion/libsvn_ra/ra_loader.c:496: (apr_err=175002)
svn: E175002: Unable to connect to a repository at URL 
'https://svn.blender.org/svnroot/bf-blender'
subversion/libsvn_ra_neon/util.c:1556: (apr_err=175002)
subversion/libsvn_ra_neon/util.c:1152: (apr_err=175002)
svn: E175002: The OPTIONS request returned invalid XML in the response: 
XML parse error at line 1: not well-formed (invalid token) 
(https://svn.blender.org/svnroot/bf-blender)

[leader:~/test] shane% svn -r 54437 co 
https://svn.blender.org/svnroot/bf-blender/ test-svn

subversion/svn/checkout-cmd.c:168: (apr_err=175002)
subversion/libsvn_client/checkout.c:110: (apr_err=175002)
subversion/libsvn_client/ra.c:475: (apr_err=175002)
subversion/libsvn_client/ra.c:335: (apr_err=175002)
subversion/libsvn_ra/ra_loader.c:496: (apr_err=175002)
svn: E175002: Unable to connect to a repository at URL 
'https://svn.blender.org/svnroot/bf-blender'
subversion/libsvn_ra_neon/util.c:1556: (apr_err=175002)
subversion/libsvn_ra_neon/util.c:1152: (apr_err=175002)
svn: E175002: The OPTIONS request returned invalid XML in the response: 
XML parse error at line 1: syntax error 
(https://svn.blender.org/svnroot/bf-blender)

[leader:~/test] shane% svn co https://svn.FreeBSD.org/base/ test-svn

subversion/svn/checkout-cmd.c:168: (apr_err=175002)
subversion/libsvn_client/checkout.c:110: (apr_err=175002)
subversion/libsvn_client/ra.c:475: (apr_err=175002)
subversion/libsvn_client/ra.c:335: (apr_err=175002)
subversion/libsvn_ra/ra_loader.c:496: (apr_err=175002)
svn: E175002: Unable to connect to a repository at URL 
'https://svn.freebsd.org/base'
subversion/libsvn_ra_neon/util.c:660: (apr_err=175002)
svn: E175002: OPTIONS of 'https://svn.freebsd.org/base': could not 
connect to server (https://svn.freebsd.org)

[leader:~/test] shane% svn co https://svn0.us-east.FreeBSD.org/base/ 
test-svn

subversion/svn/checkout-cmd.c:168: (apr_err=175002)
subversion/libsvn_client/checkout.c:110: (apr_err=175002)
subversion/libsvn_client/ra.c:475: (apr_err=175002)
subversion/libsvn_client/ra.c:335: (apr_err=175002)
subversion/libsvn_ra/ra_loader.c:496: (apr_err=175002)
svn: E175002: Unable to connect to a repository at URL 
'https://svn0.us-east.freebsd.org/base'
subversion/libsvn_ra_neon/util.c:1556: (apr_err=175002)
subversion/libsvn_ra_neon/util.c:1152: (apr_err=175002)
svn: E175002: The OPTIONS request returned invalid XML in the response: 
XML parse error at line 1: not well-formed (invalid token) 
(https://svn0.us-east.freebsd.org/base)

[leader:~/test] shane% svn co https://svn0.us-west.FreeBSD.org/base/ 
test-svn

subversion/svn/checkout-cmd.c:168: (apr_err=175002)
subversion/libsvn_client/checkout.c:110: (apr_err=175002)
subversion/libsvn_client/ra.c:475: (apr_err=175002)
subversion/libsvn_client/ra.c:335: (apr_err=175002)
subversion/libsvn_ra/ra_loader.c:496: (apr_err=175002)
svn: E175002: Unable to connect to a repository at URL 
'https://svn0.us-west.freebsd.org/base'
subversion/libsvn_ra_neon/util.c:1556: (apr_err=175002)
subversion/libsvn_ra_neon/util.c:1152: (apr_err=175002)
svn: E175002: The OPTIONS request returned invalid XML in the response: 
XML parse error at line 1: not well-formed (invalid token) 
(https://svn0.us-west.freebsd.org/base)