Log message:
Tokenize the contents of "append_executable"

This configuration parameter is used when linking executables, through
cc(1) or ld(1) for instance.

This allows passing multiple arguments via the "append_executable"
option, like "-fPIC -pie" for instance.

Committing this before joerg@'s approval since a call for testing
PKGSRC_MKPIE has just been issued, and this helps with some packages.

Log message:
Teach the wrapper for ld(1) about more cases

Building relocatable and omagic files are now recognized. They were
previously recognized as executables, which may require a different
behaviour in some environments (like when enforcing PIE).

Committing this before joerg@'s approval since a call for testing
PKGSRC_MKPIE has just been issued, and this helps with some packages.

Log message:
Set the correct operation mode in the wrapper for as(1)

This notably fixes building lang/g95 with PKGSRC_MKPIE=yes.

Reviewed by joerg@

Log message:
cwrappers-20170611:
Add new configuration options {ap,pre}pend_{shared,executable} for
adding options when the operation mode is identified as linking.

Based loosely on patch from khorben.

Log message:
cwrappers-20170112: Fix typos. From jperkin.

Log message:
Mark command_child_exec as noreturn. Fix typo.

Log message:
Hide regeneration rule for people with messed up timestamps.

Log message:
cwrappers-20161125: If spawn.h and posix_spawnp exist, prefer them over
vfork and execp.

Log message:
PR pkg/50275: Explicitly disable the locking type here. If shlock is not
a platform tool, it will introduce cyclic dependencies otherwise, e.g.
via sysutils/checkperms.

Log message:
cwrappers-20160908: Allow cc -o -.