Make special accommodation for cl in _AC_PROG_CC_G

[Braden McDaniel]

cl doesn't actually support the -g option, but issues a warning to the console 
when it is used and proceeds with business as usual. For this reason, the 
compilation test that _AC_PROG_CC_G doesn't detect that cl does not support 
the -g option. So autoconf proceeds to apply -g to cl, resulting in annoying 
warning messages throughout a build.

This patch explicitly checks $CC to see whether it is "cl" or "cl.exe".

-- 
Braden McDaniel                           e-mail: <address@hidden>
<http://endoframe.com>                    Jabber: <address@hidden>

cl-g.patch
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