[foreign-memaccess+abi] RFR: 8305369: Issues in zero-length memory segment javadoc section [v2]

[Maurizio Cimadamore]

> This patch addresses a number of issue in the zero-length memory segment javadoc section:
> 
> * there are some typo in the code samples (e.g. extra semi-colons);
> * variable names are off (e.g. spurious references to a `foreign` segment variable);
> * the explanation of how a pointer is read from a segment is lacking, and could be clarified;
> * it would be useful to have links to other section (e.g. in the Linker javadoc) which also deal with ZLMS.

Maurizio Cimadamore has updated the pull request incrementally with four additional commits since the last revision:

 - Fix indent of comments
 - Replace get w/ getAtIndex (to make it uniform)
 - Drop extra space in var declarations
 - Address review comments

-------------

Changes:
  - all: https://git.openjdk.org/panama-foreign/pull/825/files
  - new: https://git.openjdk.org/panama-foreign/pull/825/files/ba3818f6..ca02073b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=panama-foreign&pr=825&range=01
 - incr: https://webrevs.openjdk.org/?repo=panama-foreign&pr=825&range=00-01

  Stats: 8 lines in 1 file changed: 0 ins; 0 del; 8 mod
  Patch: https://git.openjdk.org/panama-foreign/pull/825.diff
  Fetch: git fetch https://git.openjdk.org/panama-foreign.git pull/825/head:pull/825

PR: https://git.openjdk.org/panama-foreign/pull/825