fixes for cross-compilation of doslib

[jmalak]

• fix include path list, list is defined by WATCOM_INCLUDE macro for target independly on host platform (OW tools -x option ensure ignoring of INCLUDE environmet variable, which is used for host default setup) OW prior version 2.0 doesn't support -x option, it requires cleanup of INCLUDE env.variable (by wmake directive .BEFORE with set INCLUDE=)
• remove separator $(HPS) macros because !include directive in make file support forward slash for file name on any host
• fix too long lines
• remove WATCOM_INCLUDE from AFLAGS, Open Watcom doesn't have any assembly related header files
• add WATCOM_INCLUDE for DOS targets

[jmalak]

Fix was relatively simple for OW2.0 use -x option (ignore INCLUDE env.variable) and add all OW header path (for target) to WATCOM_INCLUDE, which is add to compiler command line remove this mechanism for assembler because OW has not any header file for it rest of changes was not necessary but clear include path that doesn't use $(HPS) macro I test only compilation by OW1.9 and OW2.0 without any problem

Now standard OW environment variable should be setup for Linux host before run any build. It looks like this export WATCOM=/home/jiri/ow-v2/rel export PATH=$WATCOM/binl:$WATCOM/binw:$PATH export EDPATH=$WATCOM/eddat export INCLUDE=$WATCOM/lh don't forgot include $WATCOM/binw: on the PATH, it is necessary for linker to find stubs etc.

[joncampbell123]

I did not know you could split lines like that in a *.mak file:

wlib -q -b -c $(EXT_LAME_LIB) & -+$(SUBDIR)$(HPS)bitstream.obj & -+$(SUBDIR)$(HPS)encoder.obj & -+$(SUBDIR)$(HPS)fft.obj & ...

[jmalak]

It is better readable. generaly '&' character is continuation of line in wmake make files

[joncampbell123]

I'll keep that in mind, it makes it easier to see what was added to the list through git diff.