Trace can be disabled for groups of functions. By default, event
functions and functions that generate lots of output are disabled.
Trace output of Objective-C functions now use the "[ClassName
parameter:]" form.
* src/nsterm.h (NSTRACE_ALL_GROUPS, NSTRACE_GROUP_EVENTS)
(NSTRACE_GROUP_UPDATES, NSTRACE_GROUP_FRINGE, NSTRACE_GROUP_COLOR)
(NSTRACE_GROUP_GLYPHS, NSTRACE_GROUP_FOCUS): New macros,
controlling in which function groups trace should be active.
(NSTRACE_WHEN): Support for silencing a function, this also
silencing all called functions.
(NSTRACE_UNSILENCE): New macro, used to re-enable trace.
(NSTRACE_FMT_FSTYPE, NSTRACE_ARG_FSTYPE): New macros, used to
print the full screen state in NSTRACE functions.
* src/nsterm.m (nstrace_depth, nstrace_num): Made volatile as they
can be accessed from multiple threads.
(nstrace_enabled_global): New variable, when FALSE, trace is
silenced.
(nstrace_restore_global_trace_state): New function, used to
restore `nstrace_enabled_global' at end of block.
([EmacsView setFrame:], [EmacsWindow setFrame:display:])
([EmacsWindow setFrame:display:animation:])
([EmacsWindow setFrameTopLeftPoint:]): New functions, print trace
and call corresponding super function.
(Many functions): Add or enhance trace output.