ABI: convert some unsigned long to unsigned long long

This path is not yet ABI stable so take advantage to correct the
storage.  This ABI compatible on most platforms, however, is not
compatible on Windows, which is a ILLP64 platform rather than ILP64.
This extends the storage to 64-bits from 32-bits.  In the process, it
avoids some warnings on the windows builds as well.

Author: compnerd

include/swift/ABI/Task.h

@@ -343,16 +343,16 @@ class AsyncTask : public HeapObject, public Job {
     };
 
     struct GroupStatus {
-        static const unsigned long maskReady      = 0x00FFFFF0000000000l;
-        static const unsigned long oneReadyTask   = 0x00000010000000000l;
+        static const unsigned long long maskReady      = 0x00FFFFF0000000000ll;
+        static const unsigned long long oneReadyTask   = 0x00000010000000000ll;
 
-        static const unsigned long maskPending    = 0x0000000FFFFF00000l;
-        static const unsigned long onePendingTask = 0x00000000000100000l;
+        static const unsigned long long maskPending    = 0x0000000FFFFF00000ll;
+        static const unsigned long long onePendingTask = 0x00000000000100000ll;
 
-        static const unsigned long maskWaiting    = 0x000000000000FFFFFl;
-        static const unsigned long oneWaitingTask = 0x00000000000000001l;
+        static const unsigned long long maskWaiting    = 0x000000000000FFFFFll;
+        static const unsigned long long oneWaitingTask = 0x00000000000000001ll;
 
-        unsigned long status;
+        unsigned long long status;
 
         unsigned int readyTasks() {
           return (status & maskReady) >> 40;
@@ -436,7 +436,7 @@ class AsyncTask : public HeapObject, public Job {
     mutable std::mutex mutex;
 
     /// Used for queue management, counting number of waiting and ready tasks
-    std::atomic<unsigned long> status;
+    std::atomic<unsigned long long> status;
 
     /// Queue containing completed tasks offered into this channel.
     ///