fix detection of snmp library for non-standard but cached locations
add missing acinclude.m4 for previos commit
Dont build ewx-* modules when snmp.h is not available
clean unnececery debug
Fixes problems with ini file in LMS bin scripts
Merge pull request #243 from maciejlew/master

Fixes problems with ini file in LMS bin scripts
backward compatibility with pdksh 5.2.14 (1999)