[jdk11u] RFR: 8275887: jarsigner prints invalid digest/signature algorithm warnings if keysize is weak/disabled [v2]

[Goetz Lindenmaier]

> I backport this change from 17u because I had to do adaptions for 17 that 
> are needed here, too.  I needed further fixes, though:
> 
> src/java.base/share/classes/sun/security/pkcs/SignerInfo.java
> Slight difference in context, change applies to code clean.
> I had to change a record to a class to make the change compile
> with Java 11.
> 
> src/jdk.jartool/share/classes/sun/security/tools/jarsigner/Main.java
> Chunks don't apply because in 11 method JAR_DISABLED_CHECK 
> lacks the prefix JAR_.
> checkWeakKey() and  checkWeakAlg() are not implemented in 11. Hunk omitted.
> 
> test/jdk/sun/security/tools/jarsigner/TimestampCheck.java
> Resolved adding bugID to @bug.

Goetz Lindenmaier has updated the pull request incrementally with one additional commit since the last revision:

  Remove stray comment

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

Changes:
  - all: https://git.openjdk.org/jdk11u/pull/56/files
  - new: https://git.openjdk.org/jdk11u/pull/56/files/e65205a9..21a7e237

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk11u&pr=56&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk11u&pr=56&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk11u/pull/56.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u pull/56/head:pull/56

PR: https://git.openjdk.org/jdk11u/pull/56