* breakpoint.c (find_condition_and_thread): Correct task error message.
* c-exp.y (yylex): Stop before "thread N", "task N", or abbreviations
of those.
doc/
* gdb.texinfo (Thread-Specific Breakpoints): Thread specifiers
are allowed after the breakpoint condition.
testsuite/
* gdb.base/condbreak.exp: Test combinations of "break *EXP",
"if", and "thread". Correct matching in the previous test.