tests: run-lfs-symbols.sh needs gawk

With awk=mawk, I get:
```
FAIL: run-lfs-symbols.sh
========================

First sanity-check that LFS detection works.
checking ./testfile-nolfs
awk: line 3: syntax error at or near /
FAIL run-lfs-symbols.sh (exit status: 2)
```

	* tests/run-lfs-symbols.sh: Call 'gawk' instead of 'awk'.

Signed-off-by: Sam James <sam@gentoo.org>
1 file changed