[tree-ssa] Merge with basic-improvements as of 2002-11-05

[Diego Novillo]

Bootstrapped and tested on x86.  The merge brought no new
regressions.


Diego.

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Testsuite differences between 20021101/g77.sum.gz and 20021106/g77.sum.gz
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New regressions in 20021106/g77.sum.gz:

Fixed regressions in 20021106/g77.sum.gz:
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Testsuite differences between 20021101/gcc.sum.gz and 20021106/gcc.sum.gz
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New regressions in 20021106/gcc.sum.gz:

Fixed regressions in 20021106/gcc.sum.gz:
	 FAIL: gcc.dg/20020418-2.c (test for excess errors)
	 FAIL: gcc.dg/noncompile/incomplete-1.c (test for excess errors)
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Testsuite differences between 20021101/g++.sum.gz and 20021106/g++.sum.gz
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New regressions in 20021106/g++.sum.gz:

Fixed regressions in 20021106/g++.sum.gz:
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Testsuite differences between 20021101/libstdc++-v3.sum.gz and 20021106/libstdc++-v3.sum.gz
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New regressions in 20021106/libstdc++-v3.sum.gz:

Fixed regressions in 20021106/libstdc++-v3.sum.gz:
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Testsuite differences between 20021101/objc.sum.gz and 20021106/objc.sum.gz
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New regressions in 20021106/objc.sum.gz:

Fixed regressions in 20021106/objc.sum.gz:
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