Incorrect checking of '-g'

[Bram Stolk]

Hello,


There is a severe bug in libtool version 1.4.2
libtool checks for both C and CXX compilers whether
the '-c -o' contruct is allowed.

Even if it finds that this is not the case,
it will later on check for '-g' capability USING THE VERY SAME
'-c -o' construct.

Ofcourse, the test will fail (due to '-c -o', not because of '-g')

This results in an invalid assumption, causing GNU autoconf/automake
enviroments to skip debug flags when using e.g. the new Intel icc 
compiler for linux.

affected file:      /usr/share/aclocal/libtool.m4
affected version:   1.4.2


   Bram Stolk