* harbour/include/hbcomp.h
* do not inherit in macrocompiler -z compile time switch when -kc is
also used
* harbour/src/common/expropt2.c
* disable logical expression optimization (reduction) in macrocompiler
when -kc compile time switch is used.
* harbour/config/beos/gcc.mk
* harbour/config/qnx/gcc.mk
* harbour/config/bsd/gcc.mk
* harbour/config/wce/mingwarm.mk
* harbour/config/vxworks/gcc.mk
* harbour/config/hpux/gcc.mk
* harbour/config/darwin/gcc.mk
* harbour/config/dos/djgpp.mk
* harbour/config/win/mingw.mk
* harbour/config/linux/gcc.mk
* harbour/config/cygwin/gcc.mk
* harbour/config/symbian/gcc.mk
* harbour/config/os2/gcc.mk
* harbour/config/sunos/gcc.mk
* harbour/utils/hbmk2/hbmk2.prg
* enable some important warnings in GCC builds using -W<name>... instead
of -Wall and -Wno-<name>... for warning level set to low.
It should help in backward compatibility with some older GCC versions.
c0b28bd5da