samba 4.0.0+ doesn't reliably compile on Snow Leopard. In
addition, the autoconf build used by our 4.0.0 formula only
installs a subset of samba's tools. (See the readme for details.)
See Homebrew/homebrew#17820.
Once these issues are resolved, we can upgrade to 4.0.3.
This reverts commit 2229c7d9bb04bb523c9d103c5d8f2e9a60098ee5.
Samba calls autogen.sh, but never had any deps on autotools.
This causes a build error for Lion users who never installed them.
Add the standard deps on automake & libtool if XCode >= 4.3
Tested on with Clang and llvm from XCode-4.3.3.
FixesHomebrew/homebrew#13188ClosesHomebrew/homebrew#13208.
Signed-off-by: Adam Vandenberg <flangy@gmail.com>
