See gh-7985

Previously, AbstractEmbeddedServletContainerFactory detected an
exploded war by looking for `/WEB-INF/` in the path of its code
source's location. This failed on Windows due to the use of `\` rather
than `/` separators.

This commit updates AbstractEmbeddedServletContainerFactory to
uses the OS's separator rather than hardcoding `/`.

Closes gh-8100

Closes gh-8089

See gh-8089

Closes gh-8103

See gh-8103

Closes gh-8102

See gh-6404

Closes gh-8102

Closes gh-8098

Closes gh-8097

Closes gh-8096

Closes gh-8095

Closes gh-8094

Closes gh-8093

Closes gh-8090

Closes gh-8091

Closes gh-7985

* gh-7495:
  Complete removing support for Tomcat 7
  Start removing support for Tomcat 7

Closes gh-6416

See gh-6416
Closes gh-7495

* gh-7869:
  Replace dep mgmt for hazelcast-hiberate5 with hazelcast-hibernate52

Hibernate 5.2 is now the minimum supported version so providing
dependency management for hazelcast-hiberate5 no longer makes sense.
This commit replaces it with dependency management for
hazelcast-hibernate52.

Closes gh-7869

Closes gh-8086

Closes gh-8085

Closes gh-8084

Closes gh-8083

Closes gh-8082

Closes gh-8081

Closes gh-8080

Closes gh-8079

Closes gh-8078

Closes gh-69