Prune #includes from llvm/Linker.h and llvm/System/Path.h,
forcing them down into various .cpp files.

This change also:
1. Renames TimeValue::toString() and Path::toString() to ::str()
   for similarity with the STL.
2. Removes all stream insertion support for sys::Path, forcing
   clients to call .str().
3. Removes a use of Config/alloca.h from bugpoint, using smallvector
   instead.
4. Weans llvm-db off <iostream>

sys::Path really needs to be gutted, but I don't have the desire to
do it at this point.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79869 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/LLVMCConfigurationEmitter.cpp b/utils/TableGen/LLVMCConfigurationEmitter.cpp
index b27ac43..6bade9b 100644
--- a/utils/TableGen/LLVMCConfigurationEmitter.cpp
+++ b/utils/TableGen/LLVMCConfigurationEmitter.cpp
@@ -1330,9 +1330,9 @@
           O << "for (PathVector::const_iterator B = inFiles.begin()"
             << ", E = inFiles.end();\n"
             << IndentLevel << "B != E; ++B)\n"
-            << IndentLevel << Indent1 << "vec.push_back(B->toString());\n";
+            << IndentLevel << Indent1 << "vec.push_back(B->str());\n";
         else
-          O << "vec.push_back(inFile.toString());\n";
+          O << "vec.push_back(inFile.str());\n";
       }
       else if (cmd == "$OUTFILE") {
         O << "vec.push_back(out_file);\n";
@@ -1556,7 +1556,7 @@
 
   O << '\n' << Indent2
     << "out_file = OutFilename(" << (IsJoin ? "sys::Path(),\n" : "inFile,\n")
-    << Indent3 << "TempDir, stop_compilation, output_suffix).toString();\n\n";
+    << Indent3 << "TempDir, stop_compilation, output_suffix).str();\n\n";
 
   // cmd_line is either a string or a 'case' construct.
   if (!D.CmdLine)