* src/SDCCmain.c (linkEdit): don't suppress crt0 if --nostdlib is used

* src/SDCCmain.c (linkEdit): don't suppress crt0 if --nostdlib is used
  and search crt0.o in all library paths,
  (setIncludePath): proper handling of --nostdinc,
  (setLibPath): proper handling of --nostdlib
* support/regression/Makefile,
* support/regression/ports/ds390/spec.mk,
* support/regression/ports/gbz80/spec.mk,
* support/regression/ports/hc08/spec.mk,
* support/regression/ports/mcs51/spec.mk,
* support/regression/ports/mcs51-large/spec.mk,
* support/regression/ports/mcs51-stack-auto/spec.mk,
* support/regression/ports/z80/spec.mk: use include and lib files from
  built version of sdcc instead of installed version
* doc/sdccman.lyx: fixed typo in --nostdinc

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@3572 4a8a32a2-be11-0410-ad9d-d568d2c75423