Remove iwasm/runtime/platform src files, refine interpreter and fix issue of --repl option (#150)

core/shared-lib/platform/alios/bh_platform.h

@@ -17,6 +17,7 @@
 #include <limits.h>
 #include <errno.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
 /* Platform name */

core/shared-lib/platform/zephyr/bh_platform.h

@@ -115,6 +115,11 @@ double trunc(double x);
 int signbit(double x);
 int isnan(double x);
 
+unsigned long long int strtoull(const char *nptr, char **endptr,
+                                int base);
+double strtod(const char *nptr, char **endptr);
+float strtof(const char *nptr, char **endptr);
+
 int bh_platform_init();
 
 #endif

core/shared-lib/platform/zephyr/bh_platform_log.c

@@ -27,7 +27,7 @@ static int char_out(int c, struct out_context *ctx)
 static int bh_vprintk(const char *fmt, va_list ap)
 {
     struct out_context ctx = { 0 };
-    _vprintk((out_func_t) char_out, &ctx, fmt, ap);
+    z_vprintk((out_func_t) char_out, &ctx, fmt, ap);
     return ctx.count;
 }