* support/regression/ports/mcs51-xstack-auto/spec.mk: forgot -I(...)/mcs51

* support/regression/ports/mcs51-xstack-auto/spec.mk: forgot -I(...)/mcs51
* all.dsp: corrected several bin paths
* device/include/mcs51/c8051f120.h,
* device/include/mcs51/c8051f300.h,
* device/include/mcs51/c8051f310.h: used () with __at and renamed IDLE,STOP
  to PCON_IDLE,PCON_STOP
* device/include/mcs51/c8051f320.h: see above, also added sfr16 definitions
* device/lib/printf_large.c (output_float): fixed bug 1388703
* support/regression/tests/bug1057979.c: added test for bug 1388703

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@4033 4a8a32a2-be11-0410-ad9d-d568d2c75423