[analyzer] SATestBuild: strip trailing newlines from command file.

When running a make-based command, SATestBuild tries to append a -jN flag
with an appropriate N to run the build in parallel. However, it failed
to take into account that each line read includes a trailing newline
(unless it is the last line of a file without a trailing newline), which
resulted in the "-jN" appearing on a line on its own.

llvm-svn: 190164

clang/utils/analyzer/SATestBuild.py

@@ -215,6 +215,7 @@ def runScanBuild(Dir, SBOutputDir, PBuildLogFile):
         SBCommandFile = open(BuildScriptPath, "r")
         SBPrefix = "scan-build " + SBOptions + " "
         for Command in SBCommandFile:
+            Command = Command.strip()
             # If using 'make', auto imply a -jX argument
             # to speed up analysis.  xcodebuild will
             # automatically use the maximum number of cores.