[gsac] Allow .gvars in .ubcaseconts

Ignore-this: fee8fe8cfc6d533080322460b36428f

darcs-hash:20130526023359-2809a-19e97ec16d20ee6d6adb79c766e498b614b08566
[gsac] Allow !> in identifiers

Ignore-this: 9af82acaaa4168676b69bfbb0b1ead85

darcs-hash:20130526023731-2809a-d859e6e0e27d382d96254269585fff961bccaf1e
[gsac] Allow .tygvars in .ubcaseconts

Ignore-this: 88f69f3113d4a7c3e32aa2ef45c69ebc

darcs-hash:20130526024056-2809a-e8774a941d2118be65fb79bb956b4906363a6c10
[gsac] Allow !< in identifiers

Ignore-this: cf40195f79d22f29ed406e3b528faa7a

darcs-hash:20130526024109-2809a-ba1aacbf8806af9d16b01ff7c2d022b4ab25d4ae
[gsac] Allow .subcodes in .ubcaseconts

Ignore-this: 1c268235bcadd3b14dd002a5ec706d90

darcs-hash:20130526024405-2809a-779cbb401887b05b29836f561a0dfc0e65e4eb93
[gsac] Allow .fvs in .ubcaseconts

Ignore-this: d86f63e406be97216db57a8382f82e31

darcs-hash:20130526024941-2809a-d714e98d3ec277d56b3df5b940d8ab485bd1d0c1
[gsac] Allow value arguments in .prims

Ignore-this: 3553bcf64caf1379df25ea025e976dee

darcs-hash:20130526030504-2809a-443cfae47b3532b6e43f9556d1f8ae529a8b06de
[gsac] Re-factor .gvars in code items to be an ADT, so they can vary with .runes, .naturals, etc.

Ignore-this: 923858af18c5fc9249eeaeda555f38aa

darcs-hash:20130526052029-2809a-537110f7c86a80625adb78a615ccbf2719d82577