* configure.in,

* configure.in,
* doc/sdccman.lyx: bumped version to 2.7.3
* device/include/mcs51/compiler.h: fixed elif->else
* src/mcs51/gen.c (genAnd, genOr): handle accuse for pure bit operands
* src/mcs51/ralloc.c (createStackSpil): fixed SCLS bug with sloc for sbit,
  (operandUsesAcc, packRegsForAccUse): added parameter allowBitspace to
   enable accuse for bit operands
* src/SDCCmain.c (printVersionInfo),
* src/SDCCutil.c (getBuildEnvironment): factored out creation of build
  environment descriptor
* src/SDCCutil.h: added getBuildEnvironment
* src/SDCCglue.c (initialComments): use getBuildEnvironment
* support/regression/tests/bug1464657.c: enabled test test_Peephole251
* support/regression/tests/bug-408972.c: enabled test leftShiftLong
* support/regression/tests/bug1348008.c,
* support/regression/tests/bug1496419.c,
* support/regression/tests/bug1503067.c,
* support/regression/tests/preproc.c: added empty tests

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@4886 4a8a32a2-be11-0410-ad9d-d568d2c75423