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/lib/Archive/Archive.cpp b/lib/Archive/Archive.cpp
index 7811b6c..00778d9 100644
--- a/lib/Archive/Archive.cpp
+++ b/lib/Archive/Archive.cpp
@@ -31,7 +31,7 @@
 
   // If it has a long filename, include the name length
   if (hasLongFilename())
-    result += path.toString().length() + 1;
+    result += path.str().length() + 1;
 
   // If its now odd lengthed, include the padding byte
   if (result % 2 != 0 )
@@ -76,38 +76,38 @@
   path = newFile;
 
   // SVR4 symbol tables have an empty name
-  if (path.toString() == ARFILE_SVR4_SYMTAB_NAME)
+  if (path.str() == ARFILE_SVR4_SYMTAB_NAME)
     flags |= SVR4SymbolTableFlag;
   else
     flags &= ~SVR4SymbolTableFlag;
 
   // BSD4.4 symbol tables have a special name
-  if (path.toString() == ARFILE_BSD4_SYMTAB_NAME)
+  if (path.str() == ARFILE_BSD4_SYMTAB_NAME)
     flags |= BSD4SymbolTableFlag;
   else
     flags &= ~BSD4SymbolTableFlag;
 
   // LLVM symbol tables have a very specific name
-  if (path.toString() == ARFILE_LLVM_SYMTAB_NAME)
+  if (path.str() == ARFILE_LLVM_SYMTAB_NAME)
     flags |= LLVMSymbolTableFlag;
   else
     flags &= ~LLVMSymbolTableFlag;
 
   // String table name
-  if (path.toString() == ARFILE_STRTAB_NAME)
+  if (path.str() == ARFILE_STRTAB_NAME)
     flags |= StringTableFlag;
   else
     flags &= ~StringTableFlag;
 
   // If it has a slash then it has a path
-  bool hasSlash = path.toString().find('/') != std::string::npos;
+  bool hasSlash = path.str().find('/') != std::string::npos;
   if (hasSlash)
     flags |= HasPathFlag;
   else
     flags &= ~HasPathFlag;
 
   // If it has a slash or its over 15 chars then its a long filename format
-  if (hasSlash || path.toString().length() > 15)
+  if (hasSlash || path.str().length() > 15)
     flags |= HasLongFilenameFlag;
   else
     flags &= ~HasLongFilenameFlag;
@@ -217,7 +217,7 @@
   std::auto_ptr<MemoryBuffer> Buffer(
                        MemoryBuffer::getFileOrSTDIN(fName.c_str()));
   if (!Buffer.get()) {
-    if (ErrMsg) *ErrMsg = "Could not open file '" + fName.toString() + "'";
+    if (ErrMsg) *ErrMsg = "Could not open file '" + fName.str() + "'";
     return true;
   }