Do some minor reformatting of 'extern "C"' use throughout.

* autoload.cc (GetSystemTimes): Define new autoload function.
* fhandler_proc.cc (proc_listing): Add cpuinfo and partitions entries.
(fhandler_proc::fill_filebuf): Add PROC_CPUINFO and PROC_PARTITIONS cases.
(format_proc_uptime): Use GetSystemTimes if available.
(read_value): New macro.
(print): New macro.
(cpuid): New function.
(can_set_flag): New function.
(format_proc_cpuinfo): New function.
(format_proc_partitions): New function.

winsup/cygwin/mmap.cc

@@ -421,8 +421,7 @@ map::erase (int i)
 
 static map *mmapped_areas;
 
-extern "C"
-caddr_t
+extern "C" caddr_t
 mmap64 (caddr_t addr, size_t len, int prot, int flags, int fd, __off64_t off)
 {
   syscall_printf ("addr %x, len %d, prot %x, flags %x, fd %d, off %D",
@@ -583,8 +582,7 @@ mmap64 (caddr_t addr, size_t len, int prot, int flags, int fd, __off64_t off)
   return ret;
 }
 
-extern "C"
-caddr_t
+extern "C" caddr_t
 mmap (caddr_t addr, size_t len, int prot, int flags, int fd, __off32_t off)
 {
   return mmap64 (addr, len, prot, flags, fd, (__off64_t)off);
@@ -593,8 +591,7 @@ mmap (caddr_t addr, size_t len, int prot, int flags, int fd, __off32_t off)
 /* munmap () removes an mmapped area.  It insists that base area
    requested is the same as that mmapped, error if not. */
 
-extern "C"
-int
+extern "C" int
 munmap (caddr_t addr, size_t len)
 {
   syscall_printf ("munmap (addr %x, len %d)", addr, len);
@@ -654,8 +651,7 @@ munmap (caddr_t addr, size_t len)
 
 /* Sync file with memory. Ignore flags for now. */
 
-extern "C"
-int
+extern "C" int
 msync (caddr_t addr, size_t len, int flags)
 {
   syscall_printf ("addr = %x, len = %d, flags = %x",
@@ -878,8 +874,7 @@ fhandler_disk_file::fixup_mmap_after_fork (HANDLE h, DWORD access, DWORD offset,
 
 /* Set memory protection */
 
-extern "C"
-int
+extern "C" int
 mprotect (caddr_t addr, size_t len, int prot)
 {
   DWORD old_prot;