Use curl instead of wget

Git on Windows ships with curl, but not wget.
Quoted sourcing of ucpp_settings in setup in case of spaces
Use workbench-2.5 if workbench-3.0 doesn't exist

Thanks to anidev for finding this problem
UCPP_PYTHON_BIN not set on windows-git
Fix python detection on Windows
New platform: windows-git-gccdist

Supports Windows machines that do not have WindRiver installed.
Clean up python detection on windows
Do not prompt if gccdist is already installed
Fix not catching unspecified $C_DRIVE
Reuse old DEPLOY_IP when re-running ucpp setup
Better output at the end of ucpp setup
Do not re-install WPILib; better output
Reuse old DEPLOY_IP silently
New command: "ucpp help"
Note that -t is optional for "ucpp init"
Update system requirements
Fix using deleted file
Changed ucpp script to use bash built-in "command" instead of "which"
Changed ucpp-help and ucpp-setup to use "command" instead of "which"
Merge pull request #11 from gmccoy/master

Main ucpp script can't find command scripts on some systems