Error compiling commoncpp2 1.7.0 on RHEL5

I ran into the following error message trying to compile commoncpp2 version 1.7.0 under RedHatEnterpriseLinux 5.2.0:

nat.cpp: In function "char* ost::natErrorString(ost::natResult)":

nat.cpp:365: error: new declaration "char* ost::natErrorString(ost::natResult)"

nat.h:89: error: ambiguates old declaration "const char* ost::natErrorString(ost::natResult)"

There appears to be a missing "const " at the beginning of line 365 of nat.cpp.  Adding that I can compile without problem.

Hopefully this isn't rehashing a known problem, but a search for natErrorString turned up only an old thread from 2004 relating to missing files in a Windows distribution.

Cheers,

Malcolm Davis