libtool-1.4.3: validation suite failures on GNU/Linux x86 (Red Hat 7.2) with Portland Group compilers

[Nelson H. F. Beebe]

The libtool-1.4.3 release built successfully on GNU/Linux x86 (Red Hat
7.2) with Portland Group compilers (pgcc 4.0-2), but some of the
validation tests failed:

        FAIL: cdemo-make.test
        FAIL: demo-make.test
        FAIL: depdemo-make.test
        FAIL: mdemo-make.test
        FAIL: demo-make.test
        FAIL: demo-make.test
        FAIL: demo-make.test
        FAIL: depdemo-make.test
        FAIL: quote.test
        ====================
        9 of 28 tests failed
        ====================

I've already reported a successful build on this system with gcc-3.2,
so I do have a working installation of libtool-1.4.3.

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