Clash between group names and spec syntax

[simark]

It's not possible to use in a spec a group that starts with a letter that means something special in the syntax.

(gdb) itset define group1 tt2.2,tt2.3
(gdb) itfocus group1
Unknown named I/T set: `roup1'

(gdb) itset define allo tt1.1
(gdb) itfocus allo
Unknown named I/T set: `llo'

(gdb) itset define indiana tt1.1
(gdb) itfocus indiana
Unknown named I/T set: `ndiana'

(gdb) itset define tarte tt1.1
(gdb) itfocus tarte
Unknown named I/T set: `arte'