all: for Cygwin, make sure that the program-prefix is empty, so that...

all: for Cygwin, make sure that the program-prefix is empty, so that libgcrypt-config & gnutls-config are not prefixed by the target build (i586-mingw32msvc), which causes prevents configures scripts from detecting them

extras/contrib/src/Makefile

@@ -1475,7 +1475,7 @@ libgcrypt: libgcrypt-$(GCRYPT_VERSION).tar.bz2
 
 .gcrypt: libgcrypt .gpg-error
 ifdef HAVE_WIN32
-	(cd $<; ./autogen.sh && $(HOSTCC) ./configure $(HOSTCONF) --target=i586-mingw32msvc --prefix=$(PREFIX) CFLAGS="$(CFLAGS)" && make && make install)
+	(cd $<; ./autogen.sh && $(HOSTCC) ./configure $(HOSTCONF) --target=i586-mingw32msvc --prefix=$(PREFIX) --program-prefix="" CFLAGS="$(CFLAGS)" && make && make install)
 else
 ifeq ($(HOST),i686-apple-darwin8)
 	(cd $<; ./autogen.sh)
@@ -1502,7 +1502,7 @@ gnutls: gnutls-$(GNUTLS_VERSION).tar.bz2
 
 .gnutls: gnutls .gcrypt .gpg-error
 ifdef HAVE_WIN32
-	(cd $<; $(HOSTCC) ./configure $(HOSTCONF) --prefix=$(PREFIX) CFLAGS="$(CFLAGS)" --target=i586-mingw32msvc && cd gl && make &&  cd ../lib &&make && make install && cd ../includes && make install)
+	(cd $<; $(HOSTCC) ./configure $(HOSTCONF) --prefix=$(PREFIX) CFLAGS="$(CFLAGS)" --target=i586-mingw32msvc --program-prefix="" && cd gl && make &&  cd ../lib &&make && make install && cd ../includes && make install)
 else
 	(cd $<; $(HOSTCC) ./configure $(HOSTCONF) --prefix=$(PREFIX) CFLAGS="$(CFLAGS)" && cd gl && make &&  cd ../lib &&make && make install && cd ../includes && make install)
 endif