Fixed the comments to match the code and renamed the function to a (hopefully)
more descriptive name, and as per the style guide.
diff --git a/busybox.h b/busybox.h
index 4a4f44a..21c62fa 100644
--- a/busybox.h
+++ b/busybox.h
@@ -144,7 +144,7 @@
int copyFile(const char *srcName, const char *destName,
int setModes, int followLinks, int forceFlag);
-int copySubFile(int srcFd, int dstFd, size_t remaining);
+int copy_file_chunk(int srcFd, int dstFd, size_t remaining);
char *buildName(const char *dirName, const char *fileName);
int makeString(int argc, const char **argv, char *buf, int bufLen);
char *getChunk(int size);