Put RTDyldMemoryManager into its own file, and make it linked into

libExecutionEngine. Move method implementations that aren't specific to 
allocation out of SectionMemoryManager and into RTDyldMemoryManager.

This is in preparation for exposing RTDyldMemoryManager through the C 
API.

This is a fixed version of r182407. That revision broke builds because I 
forgot to move the conditional includes of various POSIX headers from 
SectionMemoryManager into RTDyldMemoryManager. Those includes are 
necessary because of how getPointerToNamedFunction works around the 
glibc libc_nonshared.a thing.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182411 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/ExecutionEngine/SectionMemoryManager.h

@@ -73,17 +73,6 @@ public:
   /// \returns true if an error occurred, false otherwise.
   virtual bool finalizeMemory(std::string *ErrMsg = 0);
 
-  void registerEHFrames(StringRef SectionData);
-
-  /// This method returns the address of the specified function. As such it is
-  /// only useful for resolving library symbols, not code generated symbols.
-  ///
-  /// If \p AbortOnFailure is false and no function with the given name is
-  /// found, this function returns a null pointer. Otherwise, it prints a
-  /// message to stderr and aborts.
-  virtual void *getPointerToNamedFunction(const std::string &Name,
-                                          bool AbortOnFailure = true);
-
   /// \brief Invalidate instruction cache for code sections.
   ///
   /// Some platforms with separate data cache and instruction cache require