RFR: 8293489: Accept CAs with BasicConstraints without pathLenConstraint [v2]

[Weijun Wang]

> Provide a new test for an old bug fix.

Weijun Wang has updated the pull request incrementally with one additional commit since the last revision:

  use RSA key, no need to clear disabled alg

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Changes:
  - all: https://git.openjdk.org/jdk/pull/10203/files
  - new: https://git.openjdk.org/jdk/pull/10203/files/1b05148a..4624fb59

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=10203&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=10203&range=00-01

  Stats: 4 lines in 1 file changed: 0 ins; 2 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/10203.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10203/head:pull/10203

PR: https://git.openjdk.org/jdk/pull/10203