Filter out -Wl,--no-undefined from LDFLAGS when using old GCC < 4, which implies old run-times. This extends the lease of life of ROOT a bit for people with really old setup. Fixes issue 97448.
Filter out -Wl,--no-undefined from LDFLAGS when using old GCC < 4, which
implies old run-times. This extends the lease of life of ROOT a bit for
people with really old setup. Fixes issue 97448.


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@46040 27541ba8-7e3a-0410-8455-c3a389f83636

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