BaseTools/Upt: Fix several bugs

1. Fix a bug of generating additional EOL in file header.
2. Fix a bug of format error for Defines section.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hess Chen <hesheng.chen@intel.com>
Reviewed-by: Yingke Liu <yingke.d.liu@Intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16153 6f19259b-4bc3-4df7-8a09-765794883524
BaseTools/ECC: Ignore duplicate check for 'NULL' library

Update a checkpoint to ignore duplicate check for 'NULL' library

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Hess Chen <hesheng.chen@intel.com>
Reviewed-by: Yingke Liu <yingke.d.liu@Intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16154 6f19259b-4bc3-4df7-8a09-765794883524