Refactor loading of jdbc/sqlanywhere adapter
Refactor loading of jdbc/sqlanywhere adapter

Like other jdbc subadapters that don't provide jars, the .jar file
needs to be required manually before calling the method.

Use an array instead of a hash for consistent ordering when running
jruby in ruby 1.8 mode.

davidbegin/sequel,gferguson-gd/sequel,gferguson-gd/sequel,reubano/sequel,freshpay/sequel,dennis-d/custom_sequel,beni55/sequel,nju520/sequel,uhoh-itsmaciek/sequel,freshpay/sequel,chef/sequel,mpalmer/sequel,davidbegin/sequel,t-morgan/sequel,yazshel/sequel,offshore-safety/sequel,mpalmer/sequel,nicohvi/sequel,seeARMS/sequel,t-morgan/sequel,beni55/sequel,uhoh-itsmaciek/sequel,seeARMS/sequel,pfarrell/sequel,nju520/sequel,yazshel/sequel,dennis-d/custom_sequel,offshore-safety/sequel,pfarrell/sequel,reubano/sequel,knut2/sequel,nicohvi/sequel,Marketcircle/sequel,knut2/sequel,offshore-safety/sequel