Unbreak build with gcc 4.3: provide missed includes and silence most annoying warnings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47367 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/CommandLine.cpp b/lib/Support/CommandLine.cpp
index 804af95..c70ed0d 100644
--- a/lib/Support/CommandLine.cpp
+++ b/lib/Support/CommandLine.cpp
@@ -29,6 +29,7 @@
 #include <cstdlib>
 #include <cerrno>
 #include <cstring>
+#include <climits>
 using namespace llvm;
 using namespace cl;
 
diff --git a/lib/Support/FileUtilities.cpp b/lib/Support/FileUtilities.cpp
index 42083e4..cde08d1 100644
--- a/lib/Support/FileUtilities.cpp
+++ b/lib/Support/FileUtilities.cpp
@@ -16,6 +16,7 @@
 #include "llvm/System/Path.h"
 #include "llvm/System/MappedFile.h"
 #include "llvm/ADT/StringExtras.h"
+#include <cstdlib>
 #include <cstring>
 #include <cctype>
 using namespace llvm;
diff --git a/lib/Support/FoldingSet.cpp b/lib/Support/FoldingSet.cpp
index 97d1f0d..bf50ed4 100644
--- a/lib/Support/FoldingSet.cpp
+++ b/lib/Support/FoldingSet.cpp
@@ -17,6 +17,7 @@
 #include "llvm/ADT/FoldingSet.h"
 #include "llvm/Support/MathExtras.h"
 #include <cassert>
+#include <cstring>
 using namespace llvm;
 
 //===----------------------------------------------------------------------===//
diff --git a/lib/Support/Statistic.cpp b/lib/Support/Statistic.cpp
index 10f13f5..e500b55 100644
--- a/lib/Support/Statistic.cpp
+++ b/lib/Support/Statistic.cpp
@@ -28,6 +28,7 @@
 #include "llvm/ADT/StringExtras.h"
 #include <algorithm>
 #include <ostream>
+#include <cstring>
 using namespace llvm;
 
 // GetLibSupportInfoOutputFile - Return a file stream to print our output on.
diff --git a/lib/Support/StringExtras.cpp b/lib/Support/StringExtras.cpp
index ac17696..1fae4fa 100644
--- a/lib/Support/StringExtras.cpp
+++ b/lib/Support/StringExtras.cpp
@@ -12,6 +12,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/ADT/StringExtras.h"
+#include <cstring>
 using namespace llvm;
 
 /// getToken - This function extracts one token from source, ignoring any