(Adding to an old question..)
It depends mainly on your language. So there are some versions here already for VB6 and others.
This is for Visual Studio & C#:
global-ignores = *.suo *.user *.userosscache *.sln.docstates *.userprefs debug release Debug Release bin x64 x86 obj Obj *_i.c *_p.c *_i.h *.ilk *.meta *.obj *.pch *.pdb *.pgc *.pgd *.rsp *.sbr *.tlb *.tli *.tlh *.tmp *.tmp_proj *.log *.psess *.vsp *.vspx *.sap Thumbs.db _UpgradeReport_Files *.dbmdl
and goes into your
%APPDATA%/Subversion/config
file. If you have a fresh config file, like me, you will only find global-ignore entries that are commented out, so you can append the line.
It is take mainly from the gitignore at https://github.com/github/gitignore/blob/master/VisualStudio.gitignore .
General case for any language
Basically, googling (or binging, if you so desire) for "gitignore (language or tool)" you will find sample gitignore files, the syntax is similar to the global-ignore of SVN, you just need to do some editing (all entries in one line for SVN, each entry in new line for GIT).
A good text editor like Sublime or Notepad++ helps a lot when converting.