Merged revisions 52997 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r52997 | russell | 2007-01-30 17:23:24 -0600 (Tue, 30 Jan 2007) | 5 lines

When we are checking for a system installed version of libgsm, we need to check
for gsm.h as well.  Furthermore, when checking for this header, it may be
located in a gsm/ sub directory, so check for that, as well.
(issue #8773)

........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@52998 65c4cc65-6c06-0410-ace0-fbb531ad65f3