add function to read single line files
Often small files are used to store the value od a variable. This
adds a function to easily read such a variable.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
1 parent 6e30646 commit 51dce5facb4d1a6f182ede9654b25c2e83878aee
@Sascha Hauer Sascha Hauer authored on 22 Sep 2013
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include/libbb.h
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lib/libbb.c