build subversion 1.7 for ubuntu 11.04

subversion 1.7 has many new fascinating features, like viewing diff in svn log command, and a cleaner directory layout (only one .svn folder in root directory, just like git does). But this version isn't available in ubuntu's official source. To upgrade to this new version, I choose to build it myself.

1. Download neon, which adds http and https protocol support to svn
2. cd to neon source root directory and run: ./configure --enable-shared --with-ssl
3. Then run: make && sudo make install
   
4. Download and extract svn source
5. Download sqlite-amalgamation , extract it and copy to sqlite-amalgamation
6. cd to svn source root directory
   
7. run svn co http://svn.apache.org/repos/asf/apr/apr-util/branches/1.3.x apr-util
8. run svn co http://svn.apache.org/repos/asf/apr/apr/branches/1.3.x apr
9. cd to apr and run: ./buildconf
10. cd to apr-util and run: ./buildconf
11. go back to svn source root directory and run: ./configure --with-ssl
12. edit files below
    apr/build/apr_rules.mk:38  change $(top_builddir) to $(apr_builddir)
    apr-util/build/rules.mk:38  change $(top_builddir) to $(apr_builddir)
13. make
14. sudo make install