PR gdb/8704

	PR gdb/8704

	* 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.