Configure warning unknown --is-lightweight option, missing script is too old or missing

[petk]

With OpenLiteSpeed 1.4.26, the ./configure outputs the following warning at the beginning:

checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
/build/main/openlitespeed/src/openlitespeed-1.4.26/missing: Unknown '--is-lightweight' option
Try '/build/main/openlitespeed/src/openlitespeed-1.4.26/missing --help' for more information
configure: WARNING: 'missing' script is too old or missing
checking for a thread-safe mkdir -p... ./install-sh -c -d

The current missing shell script in the OpenLiteSpeed root folder is version 2012-01-06.18 which, from my testing, could be easily upgraded to the more recent version of 2013-10-28.13. It can be found on some systems in /usr/share/automake-1.15/missing or in /usr/share/libtool/build-aux/missing.

[litespeedtech]

Fixed. Thanks.