* dcrt0.cc (dll_crt0_1): Initialize wincap and check for sanity before running

global ctors.
* wincap.h (wincap): Eliminate constructor.  Default is to zero memory, anyway.
* wincap.cc (wincap): Copy this on fork to avoid initialization in forked
processes.

winsup/cygwin/wincap.h

@@ -56,7 +56,6 @@ class wincapc
   void          *caps;
 
 public:
-  wincapc (): caps (NULL) {}
   void init ();
 
   void set_chunksize (DWORD nchunksize);