[gsac] Move item.== tests into their own section

Ignore-this: 5b5a88db148ea607da7d12a79cf58524

darcs-hash:20130618182133-2809a-7e6febcc44255d5d25fe4422c6846f77cc849741
[gsac] gskind.==/lifted/unlifted

Ignore-this: 286481dd92d3b4d9640fd529e06ce56d

darcs-hash:20130618193927-2809a-56370f158d62b474811dc2d6bbb8a7fb155468cf
[gsac] item.==/diff kinds

Ignore-this: d444ff060a0ce8d8f90d8063eafbb3dc

darcs-hash:20130618193943-2809a-ab9f1315961cdd5f1018768e75ea36288a3df045
[gsac] gsdl.cgs.syntax.var.fmtgs

Ignore-this: 9dd6b9d0242fa3d2ffe7500d41e9d69a

darcs-hash:20130619234835-2809a-150382d850467b58d516316f8544976638da9cc6
[gsac] gsdl.cgs.gskind.fmtgs

Ignore-this: 27fb56010e5edbfd41a6174ed4daeb16

darcs-hash:20130619235442-2809a-aa7c520e2e001fad640c8c7465c66dc5390fc222
[gsac] Finish list.fmtgs.byDefault

Ignore-this: 8bf3b955890e2b12b516c6f3f30102fa

darcs-hash:20130619235706-2809a-c2b7619b6fc4245bf64a58161f589e98d48eab4a
[gsac] fmtgs.app and fmtgs.var, for convenience

Ignore-this: 9f1a1d0774912f7def722f12d311d43a

darcs-hash:20130620000113-2809a-5484e4c5bd01bc81365788a1f4a1d07f32e6ecdb
[gsac] prefix.item.fmtgs

Ignore-this: e6be46ad9243baff882bb2406f49156e

darcs-hash:20130620000120-2809a-17aa7122f2b5ef0d3821cfc3addeb8492f25293b