* device/lib/ser_ir_cts_rts.c: integer promotion caused a call to the

* device/lib/ser_ir_cts_rts.c: integer promotion caused a call to the
  non-reentrant function __modsint in the interrupt function (thus
  corrupting math operations during serial I/O)
* device/lib/ser_ir.c: as above, changed buffersize
* src/mcs51/peeph.def: added 259.a,b for removing redundant ret
* doc/Makefile: added option -t for rsync

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@3552 4a8a32a2-be11-0410-ad9d-d568d2c75423