Add pthread.h and dispatch/dispatch.h

Note the libdispatch library as a whole is licensed under the Apache 2.0
license, even though some header files don't include this notice.

README.markdown

@@ -76,7 +76,7 @@ This is only rarely needed: macOS binaries will usually run just fine on a newer
 
 This project is licensed under APSL 2.0, a variety of BSD style licenses, and public domain code:
 
-  * `src/usr/include` is extracted from the Libc, xnu, libpthread, Libm, and CarbonHeaders. The source files are under a mix of the APSL 2.0 and a variety of BSD-style licenses. There are a few files that just say "all rights reserved". All those files have been replaced with a public domain version so they are also in effect open source.
+  * `src/usr/include` is extracted from the Libc, xnu, libpthread, libdispatch, and Libm. The source files are under a mix of the APSL 2.0 and a variety of BSD-style licenses. There are a few files that just say "all rights reserved". All those files have been replaced with a public domain version so they are also in effect open source.
   * `src/*/libSystem.s` is extracted from the above, but because it's only a list of function names I don't believe it is covered by copyright and therefore can be considered public domain. If it is covered by copyright (I'm not a lawyer), it is covered by the same copyright as `src/usr/include` above.
   * Other files like the various update scripts are placed in the public domain.
 

generate-stubs.py

@@ -32,7 +32,7 @@
 def generateStubs(sysroot, outfile, target):
     # These symbols are not defined in the header files, but must be declared
     # anyway.
-    symbols = {'dyld_stub_binder', '___bzero'}
+    symbols = {'dyld_stub_binder', '___bzero', '__tlv_bootstrap'}
 
     # Parse the src/libSystem.h file to get a list of functions declared in libSystem.
     index = clang.cindex.Index.create()

src/_types.h

@@ -24,9 +24,11 @@ typedef __UINT64_TYPE__ u_int64_t;
 
 // Some typedefs for types that have since been standardized.
 typedef __INTPTR_TYPE__   __darwin_intptr_t;
+typedef __PTRDIFF_TYPE__  __darwin_ptrdiff_t;
 typedef __SIZE_TYPE__     __darwin_size_t;
 typedef __builtin_va_list __darwin_va_list;
 typedef __WCHAR_TYPE__    __darwin_wchar_t;
+typedef __WINT_TYPE__     __darwin_wint_t;
 
 // These types are defined separately for i386 and arm, but are actually
 // defined as the same type.