size increase in toolchain image (stable/20220421)

[compnerd]

This has at least been observed on the Windows toolchain, though is likely to hit the other platforms as well.

installer.exe (pre): 362.16 MB
installer.exe (post): 374.16 MB

The installer uses maximum compression to reduce the distribution size (which is ~2.5 G in the pre case). This indicates a 12MB compressed, so likely a 25-50M uncompressed size change.

[bnbarham]

Seems to be about a 10mb increase in all binaries that link with the LLVM libraries:

/System/Library/PrivateFrameworks/LLDB.framework/Versions/A/LLDB	446	456
/usr/bin/swift-frontend	421	431
/usr/lib/sourcekitd.framework/Versions/A/XPCServices/SourceKitService.xpc/Contents/MacOS/SourceKitService	419	430
/usr/lib/swift/macosx/lib_InternalSwiftScan.dylib	414	424
/usr/bin/clang-13	359	371
/usr/lib/libLTO.dylib	191	197
/usr/bin/clangd	147	153
/usr/bin/dsymutil	136	140
/usr/lib/swift/macosx/lib_InternalSwiftSyntaxParser.dylib	79	80