8172529: Use PKIXValidator in jarsigner
Reviewed-by: xuelei, mullan, alanb

8163304: jarsigner -verbose -verify should print the algorithms used to sign the jar
Reviewed-by: mullan

8165816: jarsigner -verify shows jar unsigned if it was signed with a weak algorithm
Reviewed-by: mullan

8163303: Remove identity scope information from jarsigner -verbose output
Reviewed-by: mullan

8130302: jarsigner and keytool -providerClass needs be re-examined for modules
Reviewed-by: valeriep, mchung, mullan

8130132: jarsigner should emit warning if weak algorithms or keysizes are used
Reviewed-by: mullan

8056174: New APIs for jar signing
Reviewed-by: mullan

7191662: JCE providers should be located via ServiceLoader
Summary: Enhanced to use ServiceLoader and switched provider to Provider.Service model.
Reviewed-by: mullan, alanb, mchung

8076535: Deprecate the com.sun.jarsigner package
Reviewed-by: mullan

8074429: Move jar, jarsigner tool to jdk.jartool module
Reviewed-by: alanb, weijun, erikj, ihse