#30 _evl_console_print is not interupt save

[Ralf Kihm]

printing messages in interupt context to console will fail,
if another _evl_console_print is in progress, because
locking a semaphore can put a process to sleep. This is
not allowed in interupt context and will force BUG in
schedule().

This issue belongs up to v1.5.3 (seen with v1.4.2).

Ralf Kihm
rkihm@giga-stream.de