Build at revision 196543.

Revision 196543 is the latest revision (5th of december) before the 'sin_len' bug.

Upstream has committed usr_bin_env_python.patch and also the patch I had submitted to fix revision
196787 and building at today revision 197020 with the sin_len.patch is ok, but lldb hangs and does
not stop at a breakpoint set at main.

FWIW building with a revision is documented at 'man PKGBUILD' section 'USING VCS SOURCES'.