with wiringPiISR.
Added the ability to readall/reset from extension modules.
Changed the build script to use /bin/sh rather than /bin/bash as it seems
some installations don't have /bin/bash (or if they do, then the people who
are telling me that ./build gives them command not found are wrong)
on non Raspbian systems (and even on some Raspbian systems it would appear ):
fixed a timing issue on softTone
fixed some issues in wiringPisetup introduced when optimising the mmap calls.
Also Makefile tweaks to help improve things somewhat - decided to
read the Makefile manual after some 15 years to updated my make
grey cells somewhat.
New command in the gpio command - readall
