build: cygwin: don't rely on _WIN32 being defined

configure: Compilation fixes for current Cygwin

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@32724 b3059339-0415-0410-9bf9-f77b7e298cf2

Do not #define _WIN32 on the command line for Cygwin.

Newer Cygwin versions no longer do this and hopefully we should be able
to survive without this hack as well.  This change necessitates adapting
two #ifdefs in the MPlayer codebase.  It is committed untested as I do
not have access to a Cygwin system.

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@32763 b3059339-0415-0410-9bf9-f77b7e298cf2

configure

@@ -3052,7 +3052,7 @@ echocheck "inet6"
 if test "$_inet6" = auto ; then
   cat > $TMPC << EOF
 #include <sys/types.h>
-#if !defined(_WIN32) || defined(__CYGWIN__)
+#if !defined(_WIN32)
 #include <sys/socket.h>
 #include <netinet/in.h>
 #else
@@ -6126,7 +6126,10 @@ echores "$_musepack"
 
 echocheck "FAAD2 support"
 if test "$_faad_internal" = auto ; then
-  if x86_32 && test cc_vendor=gnu; then
+  if cygwin ; then
+    _faad_internal=no
+    res_comment="does not compile on cygwin"
+  elif x86_32 && test cc_vendor=gnu; then
     case $cc_version in
       3.1*|3.2) # ICE/insn with these versions
         _faad_internal=no

osdep/priority.c

@@ -22,7 +22,7 @@
 
 #include "osdep.h"
 
-#ifdef _WIN32
+#if defined(__MINGW32__) || defined(__CYGWIN__)
 #include <windows.h>
 #endif