Fix codecs in simulator builds on Windows

The mingw linker uses strlen() in some cases, and codeclib.c redefines it, that
leads to mingw runtime init to call into our strlen() and then ci->strlen() which
of course crashes. Apply the same fix as for malloc and friends: rename the symbol.

The codeclib.h include is necessary for normal builds.

Change-Id: Ifa85901a3e4a31cc0e10b4b905df348a239d5c99

lib/rbcodec/codecs/lib/codeclib.c

@@ -100,7 +100,8 @@ void* codec_realloc(void* ptr, size_t size)
     return(x);
 }
 
-size_t strlen(const char *s)
+#undef strlen
+size_t codec_strlen(const char *s)
 {
     return(ci->strlen(s));
 }

lib/rbcodec/codecs/lib/codeclib.h

@@ -40,6 +40,7 @@ extern struct codec_api *ci;
 #define free(x) codec_free(x)
 #undef alloca
 #define alloca(x) __builtin_alloca(x)
+#define strlen(s) codec_strlen(s)
 
 void* codec_malloc(size_t size);
 void* codec_calloc(size_t nmemb, size_t size);
@@ -51,7 +52,7 @@ void *memset(void *s, int c, size_t n);
 int memcmp(const void *s1, const void *s2, size_t n);
 void *memmove(void *s1, const void *s2, size_t n);
 
-size_t strlen(const char *s);
+size_t codec_strlen(const char *s);
 char *strcpy(char *dest, const char *src);
 char *strcat(char *dest, const char *src);
 

lib/rbcodec/codecs/libasap/asap.c

@@ -21,6 +21,7 @@
  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
+#include "codeclib.h"
 #include "asap_internal.h"
 
 static byte s_memory[65536];