MSVC header detection improvement; MSVC d-file generation now copes with FULL_OUTPUTNAME; rubbish crept in for need='dl'
MSVC header detection improvement; MSVC d-file generation now copes with FULL_OUTPUTNAME; rubbish crept in for need='dl'

stevedonovan/Lake,stevedonovan/Lake,stevedonovan/Lake,stevedonovan/Lake