BaseTools/Source/Python: New Target/ToolChain/Arch in DSC [BuildOptions]

BaseTools/Source/Python: New Target/ToolChain/Arch in DSC [BuildOptions]

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3359

Update BaseTools to support new build targets, new tool chains,
and new architectures declared in DSC file [BuildOptions] sections.

* Do not expand * when tools_def.txt is parsed.  Only expand when
  both tools_def.txt and DSC [BuilsOptions] sections have been parsed.
  This also requires more flexible matching of tool keys that contain *
  in tool key fields.

* Pre-scan the platform DSC file for FAMILY and TOOLCHAIN declarations
  DSC in [BuildOptions] sections before the FAMILY and TOOLCHAIN need
  to be known.

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Yuwei Chen <yuwei.chen@intel.com>
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Bob Feng <bob.c.feng@intel.com>