Check for lzip (some archives are lzipped)

Ideally, we should just skip the archives for which we don't have the
utilities; let's leave it until I convert the "trivial checks" part of
crosstool-NG.sh into a separate configure script.

Signed-off-by: Alexey Neyman <stilor@att.net>

configure.ac

@@ -122,6 +122,7 @@ CTNG_CHECK_PROGS_REQ([readlink], [readlink])
 CTNG_CHECK_PROGS_REQ([tar], [tar])
 CTNG_CHECK_PROGS_REQ([gzip], [gzip])
 CTNG_CHECK_PROGS_REQ([bzip2], [bzip2])
+CTNG_CHECK_PROGS_REQ([lzip], [lzip])
 CTNG_CHECK_PROGS_REQ([xz], [xz])
 CTNG_CHECK_PROGS_REQ([unzip], [unzip])
 CTNG_CHECK_PROGS_REQ([help2man], [help2man])