Add minimal support for building non-GUI parts of wxWidgets for Android.

Recognize __ANDROID__ in wx/platform.h and include the appropriate headers
from wx/android.

Also fix a couple of compilation errors (in filename.cpp) and warnings (in
event.h) which only appear when building for Android.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70703 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/android/config_android.h

@@ -0,0 +1,56 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/android/config_android.h
+// Purpose:     configurations for Android builds
+// Author:      Zsolt Bakcsi
+// Modified by:
+// Created:     2011-12-02
+// RCS-ID:
+// Copyright:   (c) wxWidgets team
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+// Please note that most of these settings are based on config_xcode.h and
+// 'fine-tuned' on a trial-and-error basis. This means, no in-depth analysis
+// of Android docs / source was done.
+
+#define wxUSE_UNIX 1
+#define __UNIX__ 1
+
+#define HAVE_NANOSLEEP
+#define HAVE_FCNTL 1
+#define HAVE_GCC_ATOMIC_BUILTINS
+#define HAVE_GETHOSTBYNAME 1
+#define HAVE_GETSERVBYNAME 1
+#define HAVE_GETTIMEOFDAY 1
+#define HAVE_GMTIME_R 1
+#define HAVE_INET_ADDR 1
+#define HAVE_INET_ATON 1
+#define HAVE_LOCALTIME_R 1
+#define HAVE_PTHREAD_MUTEXATTR_T 1
+#define HAVE_PTHREAD_MUTEXATTR_SETTYPE_DECL 1
+#define HAVE_PTHREAD_ATTR_SETSTACKSIZE 1
+#define HAVE_THREAD_PRIORITY_FUNCTIONS 1
+#define HAVE_SSIZE_T 1
+#define HAVE_STRCASECMP_IN_STRING_H 1
+#define HAVE_WPRINTF 1
+
+#define SIZEOF_INT 4
+#define SIZEOF_LONG 4
+#define SIZEOF_LONG_LONG 8
+#define SIZEOF_SIZE_T 4
+#define SIZEOF_VOID_P 4
+#define SIZEOF_WCHAR_T 4
+
+#define wxHAVE_PTHREAD_CLEANUP 1
+#define wxNO_WOSTREAM
+#define wxSIZE_T_IS_UINT 1
+#define wxWCHAR_T_IS_REAL_TYPE 1
+
+#define wxTYPE_SA_HANDLER int
+
+#define wxUSE_SELECT_DISPATCHER 1
+
+#ifdef HAVE_PTHREAD_CANCEL
+// Android doesn't support pthread_cancel().
+#undef HAVE_PTHREAD_CANCEL
+#endif