Portable Python script across Python version

Python2 supports the two following equivalent construct

	raise ExceptionType, exception_value
and
	raise ExceptionType(exception_value)

Only the later is supported by Python3.

Differential Revision: https://reviews.llvm.org/D55195

llvm-svn: 348126
diff --git a/clang/utils/analyzer/SATestBuild.py b/clang/utils/analyzer/SATestBuild.py
index fbf3882..95dd69d 100755
--- a/clang/utils/analyzer/SATestBuild.py
+++ b/clang/utils/analyzer/SATestBuild.py
@@ -382,7 +382,7 @@
             check_call(Command, cwd=Dir, stderr=LogFile,
                        stdout=LogFile,
                        shell=True)
-        except CalledProcessError, e:
+        except CalledProcessError as e:
             Local.stderr.write("Error: Analyzes of %s failed. "
                                "See %s for details."
                                "Error code %d.\n" % (