Add all of the shell options from ShellBinPkg including building the
shell from source.
Enable link time optimization for GCC debug builds to keep the size
under 0x3e0000.
Test: Use -DSHELL_TYPE=BUILD_SHELL command line options to build the
shell from source. Run the result on Galileo Gen2.
Change-Id: I1e12adb57960ac5e75e682073540a9322aa03081
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com>
Reviewed-by: Prince Agyeman <prince.agyeman@intel.com>
d3f5d59826