Initial commit.
Add dummy svndump parser.
Ignore build artifacts with .gitignore.
Implement linear history parser.
Convert tabs to spaces.
Use platform-specific build flags.

* use apr-1-config to find apr include path;
* check Darwin ports include and lib paths;
* check Linux common include path for libsvn headers.
Fix build with libsvn 1.7 and older.
Notify about skipping revisions.
Fix directory replacing and deleting.
Do not use assignment in condition
Quote node paths
Update README
Strip reduntant linebreaks
Simplify parser usage
Do not expose parser context in headers
Remove undesired linebreak in git_svn_dump_revision_noop()
Added branches support
Updated README
Fix callbacks initialization for Subversion 1.7 and older
Fix branch creation