gdb/mi: add a '--force' flag to the '-break-condition' command

gdb/mi: add a '--force' flag to the '-break-condition' command

Add a '--force' flag to the '-break-condition' command to be
able to force conditions.

gdb/ChangeLog:
2021-05-06  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* mi/mi-cmd-break.c (mi_cmd_break_condition): New function.
	* mi/mi-cmds.c: Change the binding of "-break-condition" to
	mi_cmd_break_condition.
	* mi/mi-cmds.h (mi_cmd_break_condition): Declare.
	* breakpoint.h (set_breakpoint_condition): Declare a new
	overload.
	* breakpoint.c (set_breakpoint_condition): New overloaded function
	extracted out from ...
	(condition_command): ... this.
	* NEWS: Mention the change.

gdb/testsuite/ChangeLog:
2021-05-06  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* gdb.mi/mi-break.exp (test_forced_conditions): Add a test
	for the -break-condition command's "--force" flag.

gdb/doc/ChangeLog:
2021-05-06  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* gdb.texinfo (GDB/MI Breakpoint Commands): Mention the
	'--force' flag of the '-break-condition' command.