* as/hc08/asmain.c,

* as/hc08/asmain.c,
* as/z80/asmain.c: cosmetic changes
* as/hc08/alloc.h,
* as/mcs51/alloc.h,
* as/z80/alloc.h: removed
* as/hc08/assym.c,
* as/mcs51/assym.c: replaced alloc.h with stdlib.h
* as/link/aslink.h: added LKDIRSEP and, LKDIRSEPSTR
* as/link/hc08/Makefile.in,
* as/link/mcs51/Makefile.in,
* as/link/z80/Makefile.in: added -DUNIX to CFLAGS
* as/link/lklex.c,
* as/link/mcs51/lkarea.c,
* as/link/mcs51/lkmain.c: cosmetic changes
* as/link/hc08/lklibr.c,
* as/link/z80/lklibr.c,
* as/link/mcs51/lklibr.c: used LKDIRSEP, LKDIRSEPSTR and LKOBJEXT,
  used cygwin_conv_to_full_posix_path,
  added warnings, cosmetic changes, brought more in sync
  changed old K&R into ANSI function declarations
* as/link/z80/lklibr.c (loadAdb): added
* as/link/z80/lkmain.c: removed -- option from usage text

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@4960 4a8a32a2-be11-0410-ad9d-d568d2c75423