COMP: std::vector::data() is not implemented in VS2008

Replace with &vector[0]

Change-Id: I0d902531faf236ce3cee693f401a3e9e00f99a2a
COMP: isalpha(...) is not in std namespace in VS2008

Replace std::isalpha(..) => isalpha(...) and bring
isalpha(...) into namespace on non Windows platforms.

Change-Id: I46fc9b16b03281624a940ecd81f0e99fdaa0959c