raw_ostream: [PR6745] Tweak formatting (double)%e for Windows hosts.

On MSVCRT and compatible, output of %e is incompatible to Posix by default. Number of exponent digits should be at least 2. "%+03d"

FIXME: Implement our formatter in future!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127872 91177308-0d34-0410-b5e6-96231b3b80d8

utils/lit/lit/TestingConfig.py

@@ -17,7 +17,6 @@ class TestingConfig:
                 'PATHEXT' : os.environ.get('PATHEXT',''),
                 'SYSTEMROOT' : os.environ.get('SYSTEMROOT',''),
                 'LLVM_DISABLE_CRT_DEBUG' : '1',
-                'PRINTF_EXPONENT_DIGITS' : '2',
                 'PYTHONUNBUFFERED' : '1',
                 }