Add vim-snippets to an optional-bundle area.
Upgrade UltiSnips to 3.0.
Stop clearing snippets and add priorities to our snippets.

`clearsnippets` no longer works as expected due to changes in UltiSnips,
and it seems likely it'll go away all together.  Also, adjust the
priority of our snippets so that user defined ones will have a greater
priority by default.
Update notes for UltiSnips.
Document upgrade to UltiSnips 3.0.
Remove obsolete comments regarding "clearsnippets".
Upgrade textobj-user to version 0.6.3.
Upgrade textobj-function to version 0.4.0.
Document upgrades to textobj plugins.
user/jszakmeister: add a snippet to print the stack trace in python

This will print the current stack trace at the line being executed.
It's a nice debug tool when you need to know what the call chain is.
user/jszakmeister: conditionalize any code that uses python
user/jszakmeister: disable ultisnips if python is not available
user/jszakmeister: update my snippet template
user/jszakmeister: start snippets for cmake
user/jszakmeister: allow the default font size to be overridden locally
user/jszakmeister: fix and add a cmake snippet
user/jszakmeister: set TERM to xterm-256color for Gnome Terminal
user/jszakmeister: cope with ///-style doxygen comments
user/jszakmeister: pick better font sizes

This tries to be a bit smarter about recognizing when Vim is running
under VMWare, and adjust the font size accordingly.  It also chooses a
better default based on whether your running under Windows, Mac, or
something else.
user/jszakmeister: treat my .etcrc file as shell