* device/lib/Makefile.in (Z80SOURCES): enabled float support

* device/lib/Makefile.in (Z80SOURCES): enabled float support
* sim/ucsim/z80.src/inst.cc (inst_rst): generate breakpoint on RST8,ACC==0
* src/ds390/gen.c (shiftRLong),
* src/hc08/gen.c (shiftLLong, shiftRLong): fixed bug 1533966
* src/mcs51/gen.c (sameReg): changed to sameByte,
  (xch_a_aopGet): new,
  (shiftL2Left2Result, shiftR2Left2Result, shiftRLeftOrResult,
   shiftLLong, shiftRLong): fixed bug 1533966
* src/z80/gen.c (shiftR2Left2Result, shiftL2Left2Result, genlshTwo,
  genLeftShiftLiteral, genrshTwo, genRightShiftLiteral): fixed bug 1533966
* support/regression/Makefile.in: disabled z80, enabled ucz80
* support/regression/tests/float_trans.c: enabled test for z80 and host
* support/regression/tests/shifts2.c: new, for testing bug 1533966

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@4322 4a8a32a2-be11-0410-ad9d-d568d2c75423