Bundle-aware Mac version of getself

git-svn-id: http://svn.net-core.org/repos/t-engine4@612 51575b47-30f0-44d4-a5cc-537603b46e54

src/mac/getself.m

+#import <Cocoa/Cocoa.h>
+
+const char *get_self_executable(int argc, char **argv)
+{
+	static char *cstr = 0;
+
+	if(!cstr)
+	{
+		NSString *resourcePath = [[NSBundle mainBundle] resourcePath];
+		resourcePath = [NSString stringWithFormat:@"%@/", resourcePath];
+		const char *utf8 = [resourcePath UTF8String];
+
+		cstr = malloc(strlen(utf8) + 1);
+		strcpy(cstr, utf8);
+	}
+
+	return cstr;
+}