* fhandler_process.cc (format_process_maps): Rework to report

all mapped address space in a process (committed or reserved),
	identifying the nature of the mapping (mapped file/image, heap,
	shared memory) when possible.
	(dos_drive_mappings): New helper classes.
	(heap_info): Ditto.
	* ntdll.h (struct _MEMORY_SECTION_NAME): Define.

winsup/cygwin/ntdll.h

@@ -645,6 +645,11 @@ typedef struct _MEMORY_WORKING_SET_LIST
   ULONG WorkingSetList[1];
 } MEMORY_WORKING_SET_LIST, *PMEMORY_WORKING_SET_LIST;
 
+typedef struct _MEMORY_SECTION_NAME
+{
+  UNICODE_STRING SectionFileName;
+} MEMORY_SECTION_NAME, *PMEMORY_SECTION_NAME;
+
 typedef struct _FILE_BASIC_INFORMATION {
   LARGE_INTEGER CreationTime;
   LARGE_INTEGER LastAccessTime;