BaseTools/toolsetup.bat: fixed the error when the path contains space
BaseTools/toolsetup.bat: fixed the error when the path contains space

when the path contains space, it will report error for PATH Environment
update.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Yonghong Zhu <yonghong.zhu@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: 3158a46dfd52e07d1fda3e32e1ab2e353a00b20f@18852 6f19259b-4bc3-4df7-8a09-765794883524

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