[SOL] Use R10 as the stack pointer #299

Job	Run time
abi-dump-setup	1m 19s
Build lldb / Lit Tests (ubuntu-22.04)	24m 52s
Build lldb / Lit Tests (windows-2019)	2m 21s
Test llvm,clang,libclc / Lit Tests (ubuntu-22.04)	24m 52s
Test llvm,clang,libclc / Lit Tests (windows-2019)	1m 53s
Build lldb / Lit Tests (macOS-latest)	14m 18s
Test llvm,clang,libclc / Lit Tests (macOS-latest)	24m 57s
Test lld / Lit Tests (ubuntu-22.04)	24m 53s
Test lld / Lit Tests (windows-2019)	2m 31s
Test lld / Lit Tests (macOS-latest)	9m 39s
abi-dump (build-baseline)	23m 27s
abi-dump (build-latest)	23m 27s
abi-compare	1s
	2h 58m 30s

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