Log Message:
Update to 0.29.0.

Remove patch-ad (fixed in this release).

 User-visible changes:
 * 'svn status' now streams its response.  (r6913, #1426)
 * 'svn status' now recurses into externals (r6913, #1428)
 * new 'svnadmin verify' command to verify repository data (r6851, #1074)
 * SSL changes:  (r6958, #1371)
     - dropped support for PEM-encoded client certs, only accept PKCS12 now.
     - 'ssl-authority-files' is now a list of CA files
     - no more 'ssl-client-cert-type' and 'ssl-client-key-file' variables.
 * new svndumpfilter option: '--preserve-revprops' to keep props on empty revs
 * mailer.py improvement:  handle multiple match groups (r6940)
 * remove in-repos/on-disk repository template features, till post-1.0 (r6965)
 * various cleanups to the Book
 * other bugfixes: switch deletion bug (r6890, #1496), status
   repos-delete bug (r6913, #1469), reversion of '.' (r6953, #854).

 Developer-visible changes:
 * GUI developers take note: prompting API changed (r6928, #1214)
 * now compile against neon-0.24; 0.23.9 support to be dropped soon. (r6958)
 * various improvements to Perl/SWIG bindings
 * tree re-org:  non-core utilities split into 'tools' and 'contrib' areas.
 * some gen_make.py/gen-base.py improvements
 * configure.in CFLAGS bugfix (r6963)
 * stop callng deprecated APIs in APR, in preparation for upcoming APR-1.0.