Remove ucore_ prefix from headers and source files

include/ucore/read_file.h

@@ -0,0 +1,20 @@
+#ifndef UCORE_READ_FILE_H_
+#define UCORE_READ_FILE_H_y
+
+#include <stddef.h>
+
+/** Read the content of a file.
+ * The returned char* is malloced memory and must be freed by the caller.
+ * The content is terminated by a nul byte, regardless of whether the content 
+ * is binary or text. The returned length does not include this nul byte.
+ *
+ * @param file_name name of the file
+ * @param length Returned length of the content read
+ * @param max Fail if the read content length is greater than max.
+ * @return The content read from the file, or NULL if something failed
+ * (inspect errno to see why it failed)
+ */
+char *
+uc_read_file(const char *file_name, size_t *length, size_t max);
+
+#endif