* 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/hookapi.cc

@@ -111,7 +111,6 @@ RedirectIAT (function_hook& fh, PIMAGE_IMPORT_DESCRIPTOR pImportDesc,
 void
 get_export (function_hook& fh)
 {
-  extern HMODULE cygwin_hmodule;
   PIMAGE_DOS_HEADER pdh = (PIMAGE_DOS_HEADER) cygwin_hmodule;
   if (pdh->e_magic != IMAGE_DOS_SIGNATURE)
     return;