• update to 20190725
• shift to gmake for build
• pet portlint

Release 20190725:

• autoconf scripts update
• added build description for cmake
• added build dependency calculation
• added support for PAGER environment variable
• make now stores object files in build directory
• removed some dead code
• changed default log level to status
• reworked/simplified logging code

Description of fields to fill in above: 76 columns --|
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Obtained from: If the change is from a third party.
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Relnotes: Set to 'yes' for mention in release notes.
Security: Vulnerability reference (one per line) or description.
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Differential Revision: https://reviews.freebsd.org/D### (*full* phabric URL needed).
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M xjobs/Makefile
M xjobs/distinfo