added REFERENCE

Signed-off-by: yersinia <yersinia.spiros@gmail.com>
added libc_leak.c from https://bugzilla.redhat.com/attachment.cgi?id=451664
added .gitignore

Signed-off-by: yersinia <yersinia.spiros@gmail.com>
memx.c: added from https://sourceware.org/bugzilla/show_bug.cgi?id=11261

Signed-off-by: yersinia <yersinia.spiros@gmail.com>
memx2.c: added from https://sourceware.org/bugzilla/show_bug.cgi?id=11261

Signed-off-by: yersinia <yersinia.spiros@gmail.com>