Eliminate extra gotos in common branch tail code (#528)

The implementation of various JUMP opcodes tried to use a common tail
that did a POP and branched to the next opcode. While the extra gotos
probably aren't harmful, neither are they beneficial to code size or speed.

Eliminate extra gotos in common branch tail code (#528)

The implementation of various JUMP opcodes tried to use a common tail
that did a POP and branched to the next opcode. While the extra gotos
probably aren't harmful, neither are they beneficial to code size or speed.

Eliminate extra gotos in common branch tail code (#528)

The implementation of various JUMP opcodes tried to use a common tail
that did a POP and branched to the next opcode. While the extra gotos
probably aren't harmful, neither are they beneficial to code size or speed.

Correct {DSK} versioned file cache failures (#526)

A missing check for the applicability of a versioned file cache
caused loadups to fail in the case where the modification timestamp
of a directory and its parent were identical, and the file being
looked up had the same name (when lowercased) as the directory it was
contained within. E.g., looking up TEDIT in library/tedit/ where
the modification times of library and library/tedit were identical.

The inode number of the directory containing the file must be the
same as the inode number of the directory the cache was built from.

Correct {DSK} versioned file cache failures (#526)

A missing check for the applicability of a versioned file cache
caused loadups to fail in the case where the modification timestamp
of a directory and its parent were identical, and the file being
looked up had the same name (when lowercased) as the directory it was
contained within. E.g., looking up TEDIT in library/tedit/ where
the modification times of library and library/tedit were identical.

The inode number of the directory containing the file must be the
same as the inode number of the directory the cache was built from.

Not all systems define MAP_FAILED for the return value from failing m…

…map() (#502)

Merge pull request #504 from Interlisp/fgh_fix-cygwin-github-build

Fix Cygwin github builds:  Issue#1705

Merge pull request #499 from Interlisp/fgh_buildRelease_MacOS_fix

In buildRelease workflow, MacOS job - fix issue with uninstall of casks that have not actually been installed

Eliminate warnings for ignored fprintf() result when printing message…

…s to stderr

Merge pull request #489 from Interlisp/fgh_em-build-01

Add Emscripten build to buildRelease workflow