Simplify numerical evaluation of BuiltinFunctions
Merge remote-tracking branches 'origin/u/jdemeyer/ticket/17131' and 'origin/u/jdemeyer/ticket/17133' into ticket/17130
Set permissions for atomic_write() files to the default permissions

Use atomic_write() to write citations.pickle files.
In atomic_write(), call fsync() on the file.
adds needed files
completes SPKG.txt
changes package number
changes SPKG and completes install
updates checksums
small changes
Adding a gambit.py file with doctests showing that gambit can be used
Minor typos etc
Rewording and adding an Ipython set of examples - also making gambit tests optional
More Ipython examples
Fixing notebook error
Reorganistion of ipython code
Fixing errors of Ipython output
Merge branch 'u/jdemeyer/ticket/17130' of trac.sagemath.org:sage into 6.5beta1

* 'u/jdemeyer/ticket/17130' of trac.sagemath.org:sage:
  Simplify numerical evaluation of BuiltinFunctions

Conflicts:
	src/sage/functions/other.py
17130: reviewer's patch: fix typo
Remove src/sage/misc/bug.py
Use clang++ on OSX if we use clang