Perform common git actions faster.

Change cmd.exe's shortcut target (right-click->properties) to %windir%\system32\cmd.exe /K X:\path\to\gitdos.cmd

• gi -> git init
• gs -> git status
• ga -> git add <args>
• gt -> git tag <args> gd -> git diff <arg> gr -> git remote <args>
• gf -> git fetch <args>
• gb -> git branch <args>
• gc -> git checkout <arg>
• gcm -> git commit -m <args>
• gup -> git push origin <arg> || git push <arg1> <arg2>
• gdn -> git pull origin <arg> || git push <arg1> <arg2>
• gcl -> git clone <args>