sim_pin: remove special case (-0) in isnegative

just treat -0 as 0

Note: halcmd rejects nEmm format for u32,s32 -- not addressed here

Signed-off-by: Dewey Garrett <dgarrett@panix.com>
docs: fix some pyvcp examples

initval for checkbutton and radiobutton take a number, not a string.
Docs: remove comp from hal component generator title
comp has been renamed halcompile

Signed-off-by: John Thornton <jthornton@gnipsel.com>
docs: document milltask's "ini.*" hal pins

Signed-off-by: Jeff Epler <jepler@unpythonic.net>
Merge remote-tracking branch 'origin/2.6'

Signed-off-by: Jeff Epler <jepler@unpythonic.net>