- Only depend on python-base to trim down BuildRequires
- Do not build the html manual
- Use upstream pristine tarball

- Update to version 1.5.1
* Recompacting removes more entries from the build and deps logs.
* Add a manifest parsing perftest and generator that generates
random build manifests.
* $in, $out are escaped more robustly.
* `depfile=$out.d` now works if $out gets escaped.
* ninja doesn't error out when it tries to create a directory and
the directory already exists.
* Ninja now accepts both / and \ on windows when making directories.
* \r\n line endings are now accepted in depfiles.
* depfile file names can now contain '{' and '}'.
* -t compdb no longer crashes on edges with emtpy inputs.
* 'keeprsp' is now included in the spelling suggestestions for -d
* Many improvements to ninja-mode.el.
* ninja_syntax.py is now faster.
* bash completion and zsh completion provides completions more often.
* ninja.vim now highlights $$ correctly.