RFR: JDK-8029942: Update VERSION_MAJOR for JDK 10

[Erik Joelsson]

The default major version for the jdk 10 repos needs to be updated from 
9 to 10.

Bug: https://bugs.openjdk.java.net/browse/JDK-8029942
Patch:

diff -r 07f6f1f4140e common/autoconf/version-numbers
--- a/common/autoconf/version-numbers
+++ b/common/autoconf/version-numbers
@@ -25,7 +25,7 @@

 # Default version numbers to use unless overridden by configure

-DEFAULT_VERSION_MAJOR=9
+DEFAULT_VERSION_MAJOR=10
 DEFAULT_VERSION_MINOR=0
 DEFAULT_VERSION_SECURITY=0
 DEFAULT_VERSION_PATCH=0


/Erik