Update 'Getting Started' to suggest using GCC 4.2 or higher (or Clang).  There is no reason to support older versions of GCC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143366 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/GettingStarted.html b/docs/GettingStarted.html
index c8a7d2f..460aca8 100644
--- a/docs/GettingStarted.html
+++ b/docs/GettingStarted.html
@@ -516,9 +516,8 @@
 
 <p>LLVM is very demanding of the host C++ compiler, and as such tends to expose
 bugs in the compiler.  In particular, several versions of GCC crash when trying
-to compile LLVM.  We routinely use GCC 3.3.3, 3.4.0, and Apple 4.0.1 
-successfully with them (however, see important notes below).  Other versions 
-of GCC will probably work as well.  GCC versions listed
+to compile LLVM.  We routinely use GCC 4.2 (and higher) or Clang.  
+Other versions of GCC will probably work as well.  GCC versions listed
 here are known to not work.  If you are using one of these versions, please try
 to upgrade your GCC to something more recent.  If you run into a problem with a
 version of GCC not listed here, please <a href="mailto:llvmdev@cs.uiuc.edu">let