[Tinycc-devel] make test fails on musl libc

[noneofyourbusiness]

additionally, the configure script depends on some unportable (not POSIX) 
methods that leads to musl not being detected, requiring --config-musl to not 
fail the build

testing on alpine should be close enough to reproduce

see attached files

cmdline
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config.h
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config.mak
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test.log
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