* winsup.h (cygwin_hmodule): Declare.

* exceptions.cc (inside_kernel): Reverse return values to reflect function
name.  Return true if we're in cygwin1.dll or if we're executing in dll_entry.
(_cygtls::interrupt_now): Reflect reversal of inside_kernel return value.
* hookapi.cc (cygwin_hmodule): Remove declaration.
* init.cc (dll_entry): Use in_dllentry global to record that we are executing
in dllentry.

winsup/cygwin/winsup.h

@@ -354,6 +354,7 @@ extern HANDLE hMainProc;
 extern HANDLE hProcToken;
 extern HANDLE hProcImpToken;
 extern HANDLE hExeced;
+extern HMODULE cygwin_hmodule;
 
 extern bool cygwin_testing;