genop.tab: Add documentation for many BEAM instructions

By Erik Stenman (happi) with corrections by me.
Merge branch 'maint'

* maint: (26 commits)
  genop.tab: Add documentation for many BEAM instructions
  asn1ct_constucted_per: Directly call asn1ct_gen_per
  Clean up handling of .asn1db files
  PER, UPER: Fix encoding/decoding of open types greater than 16K
  PER, UPER: Optimize table constraints
  PER, UPER: Optimize encoding using an intermediate format
  Refactor decoding of components of SEQUENCE OF / SET OF
  PER,UPER: Get rid of unused 'telltype' argument in decoding functions
  Optimize the generated encode/2 function
  UPER: Optimize complete/1
  Clean up checking of objects
  Improve tests of deep table constraints
  BER: Handle multiple optional SEQUENCE fields with table constraints
  Test OPTIONAL and DEFAULT for open types
  PER/UPER: Fix encoding of an object set with multiple inlined constructs
  Remove broken support for multiple UNIQUE
  Extend the test for parameterized information objects
  asn1_SUITE: Remove off-topic (and slow) smp/1 test case
  SeqOf: Add more tricky SEQUENCE OF tests
  Clean up handling of extension addition groups
  ...