[RPL/2] RPL/2 4.1.30

[BERTRAND Joël]

	Hello,

	New release with following bugfixes:
- major bug is fixed in software interrupts subsystem that tried to
lock a cleared mutex;
- deadlock is fixed in SYSEVAL. This intrinsic function entered in
deadlock if stdout/stderr of spawned subprocess was longer than pipe
buffer size;
- segmentation fault is fixed in NEG (on integer matrices);
- CoCoALib is upgraded to avoid a compilaton failure on 32 bits systems;
- SST does not enter anymore in called subroutine.

	Best regards,

	JKB