Due to the way make is designed, not being able to read a makefile
is basically silent.

Record errors due to missing permissions and other oddities, and display them
when we error out due to lack of

Due to the way make is designed, not being able to read a makefile
is basically silent.

Record errors due to missing permissions and other oddities, and display them
when we error out due to lack of targets, as a quality-of-life diagnostic.

Based on a remark from sthen@, with some feedback and tweaks from op@

okay op@, kn@

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simplify the way we account for different jobs:
- have a simple variable "sequential" that counts whether we are
running more than one job (for the expensive heuristics)
- don't expose various thing

simplify the way we account for different jobs:
- have a simple variable "sequential" that counts whether we are
running more than one job (for the expensive heuristics)
- don't expose various things globally, just have a set_noparallel() for
the parser
- preallocate exactly enough job structures and record them in availableJobs
- keep one job on the side for .INTERRUPT

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Correct $OpenBSD$ stuff

two small changes:
- allow variables in SysV modifiers, as requested by matthieu@
(since recursive variables are an extension, this just extends the
extension)
- variation on :Q called :QL (quote li

two small changes:
- allow variables in SysV modifiers, as requested by matthieu@
(since recursive variables are an extension, this just extends the
extension)
- variation on :Q called :QL (quote list), which does quote every character
EXCEPT for whitespace. e.g.,

toto:
@for i in ${VAR:QL} ...

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rewrite of the basic suffix/target parsing: use hash for suffixes.

Store special targets in target hash, and use them for the parsing.

Use OP_DUMMY flag to mark targets that don't really exist yet,

rewrite of the basic suffix/target parsing: use hash for suffixes.

Store special targets in target hash, and use them for the parsing.

Use OP_DUMMY flag to mark targets that don't really exist yet, such
as interrupt and default nodes.

Also, .PATHxxx is special in suffixes.

Small tweaks to compat.c, so that run_commands does more stuff after
the fork() (and thus no need to free things).

Remove distinction between local and global jobs.

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kill extra spaces at end of line

Mostly clean-up:
- cut up those huge include files into separate interfaces for all modules.
Put the interface documentation there, and not with the implementation.
- light-weight includes for needed

Mostly clean-up:
- cut up those huge include files into separate interfaces for all modules.
Put the interface documentation there, and not with the implementation.
- light-weight includes for needed concrete types (lst_t.h, timestamp_t.h).
- cut out some more logically separate parts: cmd_exec, varname, parsevar,
timestamp.
- put all error handling functions together, so that we will be able to
clean them up.
- more systematic naming: functioni to handle interval, function to handle
string.
- put the init/end code apart to minimize coupling.
- kill weird types like ReturnStatus and Boolean. Use standard bool (with a
fallback for non-iso systems)
- better interface documentation for lots of subsystems.

As a result, make compilation goes somewhat faster (5%, even considering
the largish BSD copyrights to read). The corresponding preprocessed
source goes down from 1,5M to 1M.

A few minor code changes as well: Parse_DoVar is no longer destructive.
Parse_IsVar functionality is folded into Parse_DoVar (as it knows what an
assignment is), a few more interval handling functions. Avoid calling
XXX_End when they do nothing, just #define XXX_End to nothing.

Parse_DoVar is slightly more general: it will handle compound assignments
as long as they make sense, e.g., VAR +!= cmd
will work. As a side effect, VAR++=value now triggers an error
(two + in assignment).
- this stuff doesn't occur in portable Makefiles.
- writing VAR++ = value or VAR+ +=value disambiguates it.
- this is a good thing, it uncovered a bug in bsd.port.mk.

Tested by naddy@. Okayed millert@. I'll handle the fallback if there is
any. This went through a full make build anyways, including isakmpd
(without mickey's custom binutils, as he didn't see fit to share it with me).

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