Note:
Subversion up to 1.8.16 (inclusive) have security issues.

Subversion 1.8.0 for Apache httpd 2.2.x
Windows installer
(repacked with correct httpd 2.2 modules):
Setup-Subversion-1.8.0-1.msi
Subversion book as Windows help file: svn-book.chm
Windows binaries: svn-win32-1.8.0.zip
Development libs and doc: svn-win32-1.8.0_dev.zip
Debug symbols: svn-win32-1.8.0_pdb.zip
JavaHL bindings: svn-win32-1.8.0_javahl.zip
Perl 5.9 bindings: svn-win32-1.8.0_pl.zip
Python 2.6 bindings: svn-win32-1.8.0_py26.zip
Python 2.7 bindings: svn-win32-1.8.0_py27.zip
Ruby bindings: svn-win32-1.8.0_rb.zip
README file: README.txt
Subversion 1.8.0 for Apache httpd 2.4.x
(Not as much tested as the above version but passes the svn test suite).
Windows installer (httpd 2.4 modules): Setup-Subversion-1.8.0-ap24.msi
Windows binaries: svn-win32-1.8.0-ap24.zip
Development libs and doc: svn-win32-1.8.0-ap24_dev.zip
Debug symbols: svn-win32-1.8.0-ap24_pdb.zip
JavaHL bindings: svn-win32-1.8.0-ap24_javahl.zip
Perl 5.9 bindings: svn-win32-1.8.0-ap24_pl.zip
Python 2.6 bindings: svn-win32-1.8.0-ap24_py26.zip
Python 2.7 bindings: svn-win32-1.8.0-ap24_py27.zip
Ruby bindings: svn-win32-1.8.0-ap24_rb.zip
README file: README.txt