Add build instructions for WinCE target

Fix typo in Core.h declarations for WinCE
Drop mcpu tuning as it conflicts with march
(armv5te does not target Jazelle but our code is C so it's fine i think...)

Makefile

@@ -176,7 +176,7 @@ endif
 ifeq ($(PLAT),wince)
 	CC      =  arm-mingw32ce-gcc
 	OEXT    =  .exe
-	CFLAGS  += -march=armv5tej -mcpu=arm926ej-s -DUNICODE -D_WIN32_WCE
+CFLAGS  += -march=armv5te -DUNICODE -D_WIN32_WCE -std=gnu99
 	LDFLAGS =  -g
 	LIBS    =  -lcoredll -lws2
 	BUILD_DIR = build/wince

readme.md

@@ -401,6 +401,15 @@ The PowerPC build will usually perform much better
 
 [Guide for Carbide.c++](misc/symbian/readme.md)
 
+#### Windows CE / PocketPC
+
+1. Install libmpfr-dev (or non-Debian equivalent)
+2. Unpack [the Windows CE GCC Toolchain](https://cegcc.sourceforge.net/) and update your $PATH to include it
+3. Add the following symbolic links in ```/usr/lib/i386-linux-gnu/``` to account for old toolchain versions:
+    * ```libmpfr.so.1``` -> ```libmpfr.so```
+    * ```libgmp.so.3``` -> ```libgmp.so```
+4. Run ```make wince```
+
 #### Other systems
 
 You'll have to write the necessary code. You should read `portability.md` in doc folder.

src/Core.h

@@ -670,7 +670,7 @@ typedef cc_uint8  cc_bool;
 	#define DEFAULT_NET_BACKEND CC_NET_BACKEND_BUILTIN
 	#define DEFAULT_AUD_BACKEND CC_AUD_BACKEND_NULL
 	#define DEFAULT_GFX_BACKEND CC_GFX_BACKEND_SOFTFP
-    #define DEFAULT_SSL_BACKEND CC_SSL_BACKEND_BEARSS
+    #define DEFAULT_SSL_BACKEND CC_SSL_BACKEND_BEARSSL
 #endif
 #endif
 

src/Platform_WinCE.c

@@ -44,7 +44,7 @@ static CRITICAL_SECTION dir_lock;
 *#########################################################################################################################*/
 #include "main_impl.h"
 
-int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPWSTR lpCmdLine, int nCmdShow) {
+int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPWSTR lpCmdLine, int nCmdShow) {
 	cc_result res;
 	SetupProgram(0, NULL);