applied "Create graph output" patch from http://savannah.gnu.org/patch/?7447
prints invoked, finished time of each target
explain what print_target_update_time_flag is for

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>
fixed index out of range error. if condition should be true only if it has a form of archive reference
mark also other types than phony targets

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>
mark this version as distinct from vanilla make

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>
make profiling info stand out (until we have config)

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>
whitespace fixes

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>
profiling info on stderr; print only if it makes sense

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>
disables code with #if 0

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>
close string

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>
'make -j' profile results

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>
declare print_targets_update_time to remove warning

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>
Improve the profiling output

Add make level and pid to profiling target identifier
separate start, end and delta fields using ';'

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>
put more meaning into the edges' representation

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>
Improve node layout

Limit each node to one line in the dot file

Choose better formatting to distinguish between various types of
nodes: phony/real, created/existing, directly called, precious etc

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>
a suggestion for stem type

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>
Profile option: -u/--update-time -> -P/--profiling

-P/--profile is a better name for profiling option
Profile option will accept parameter for ouput format

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>
--profile-format will be an alias for -P

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>
Added configurable profile format option

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>