[flutter_tools] confusing log output when compiling flutter tool

[christopherfujino]

See the following terminal session (the ^C at the end is when I sent SIGINT to the process, as it was apparently hanging indefinitely)

~/git/flutter/packages/flutter_tools$ git checkout master
Already on 'master'
Your branch is up to date with 'upstream/master'.
~/git/flutter/packages/flutter_tools$ git pull upstream master
From github.com:flutter/flutter
 * branch                  master     -> FETCH_HEAD
Already up to date.
~/git/flutter/packages/flutter_tools$ git rev-parse HEAD
57c7aa53c178f722aec19a76a60552e78ad09997
~/git/flutter/packages/flutter_tools$ flutter
Building flutter tool...
Resolving dependencies... (1.3s)
Got dependencies.
^C

[christopherfujino]

currently bisecting

[christopherfujino]

bisected to 7a28078#diff-fecfc9dccd8a04f4936b4fa1bf09db14f099197ead58e7633009ac282443c4d0

[christopherfujino]

Ok lowering this to p3--it's not hanging forever, it still compiles, however there is new pub output that comes AFTER Building flutter tool... when really actual dart compilation hasn't happened yet...and the dart code compilation took so long I thought it was hanging. Leaving this open to move the message.

[christopherfujino]

The bug here is that we print "Building flutter tool..." too early in the bash script