attempt to get mingw building correctly after recent changes

make typedef of boolean match mingw header files
link with shell32 and ole32 as Makefile.msc now had to do
kludge some stuff missing from mingw headers in sys/winnt/windmain.c

sys/winnt/Makefile.gcc

@@ -510,9 +510,9 @@ endif
 CFLAGSBASE  = -c $(cflags) $(WINPINC) $(cdebug) $(CURSESDEF)
 #LFLAGSBASEC = $(linkdebug)
 #LFLAGSBASEG = $(linkdebug) -mwindows
-
-conlibs = -lgdi32 -lwinmm $(BCRYPT)
-guilibs = -lcomctl32 -lwinmm
+baselibs = -lwinmm -lshell32 -lole32
+conlibs = -lgdi32 $(baselibs) $(BCRYPT)
+guilibs = -lcomctl32 $(baselibs)
 ifeq "$(WANT_WIN_QT4)" "Y"
     # Might be either Qt 4 or Qt 5
     ifeq "$(HAVE_QT5)" "Y"

sys/winnt/windmain.c

@@ -11,9 +11,26 @@
 #include <stdlib.h>
 #include <sys\stat.h>
 #include <errno.h>
+#ifndef __MINGW32__
 #include <appmodel.h>
+#endif
 #include <ShlObj.h>
 
+#ifdef __MINGW32__
+extern LONG GetCurrentPackageFullName(UINT32 *packageFullNameLength,
+                      PWSTR  packageFullName);
+extern HRESULT SHGetKnownFolderPath(REFKNOWNFOLDERID rfid,
+                      DWORD dwFlags, HANDLE hToken, PWSTR  *ppszPath);
+#ifdef INITGUID
+#define DEFINE_KNOWN_FOLDER(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) const GUID DECLSPEC_SELECTANY name = { l, w1, w2,{ b1, b2, b3, b4, b5, b6, b7, b8 } }
+#else
+#define DEFINE_KNOWN_FOLDER(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) const GUID name
+#endif
+DEFINE_KNOWN_FOLDER (FOLDERID_ProgramData, 0x62ab5d82, 0xfdc1, 0x4dc3, 0xa9, 0xdd, 0x07, 0x0d, 0x1d, 0x49, 0x5d, 0x97);
+DEFINE_KNOWN_FOLDER (FOLDERID_LocalAppData, 0xf1b32785, 0x6fba, 0x4fcf, 0x9d, 0x55, 0x7b, 0x8e, 0x7f, 0x15, 0x70, 0x91);
+DEFINE_KNOWN_FOLDER (FOLDERID_Profile, 0x5e6c858f, 0x0e22, 0x4760, 0x9a, 0xfe, 0xea, 0x33, 0x17, 0xb6, 0x71, 0x73);
+#endif
+
 #if 0
 #include "wintty.h"
 #endif