Create wrappers for MacOS/Linux to allow sdk "binaries" to be

Create wrappers for MacOS/Linux to allow sdk "binaries" to be 
run from the repo.
Committed: https://code.google.com/p/dart/source/detail?r=14764

[Ivan Posva, 2012-11-08 08:59:51]

https://codereview.chromium.org/11381003/diff/2001/sdk/bin/dart2js
File sdk/bin/dart2js (right):

https://codereview.chromium.org/11381003/diff/2001/sdk/bin/dart2js#newcode31
sdk/bin/dart2js:31: exec "$BIN_DIR"/dart --no_use_inlining --heap_growth_rate=32
"$CUR_DIR/../lib/_internal/compiler/implementation/dart2js.dart" $COLORS "$@"
How do you plan to keep this in sync with the real dart2js script?

[dgrove, 2012-11-08 16:16:38]

On 2012/11/08 08:59:51, Ivan Posva wrote:
> https://codereview.chromium.org/11381003/diff/2001/sdk/bin/dart2js
> File sdk/bin/dart2js (right):
> 
> https://codereview.chromium.org/11381003/diff/2001/sdk/bin/dart2js#newcode31
> sdk/bin/dart2js:31: exec "$BIN_DIR"/dart --no_use_inlining
--heap_growth_rate=32
> "$CUR_DIR/../lib/_internal/compiler/implementation/dart2js.dart" $COLORS "$@"
> How do you plan to keep this in sync with the real dart2js script?

That's an excellent question. We can actually make the scripts other than "dart"
identical to the ones in dart-sdk.

So, here's what I think we should do after this CL goes in.
1. stop using build_helper.dart - it's too complicated. 
2. stop producing scripts in, say, xcodebuild/ReleaseIA32
3. copy the scripts from sdk/bin to xcodebuild/ReleaseIA32/dart-sdk/bin during
the build

I'll upload new versions of these scripts that are identical to what we'll copy
into dart-sdk/bin, which will solve the problem.

[dgrove, 2012-11-08 16:24:28]

ptal. dart2js and dartdoc are now identical to what's in
xcodebuild/ReleaseIA32/dart-sdk/bin

pub matches what it will be once pub is moved to the right spot in the SDK.

[ahe, 2012-11-08 16:45:13]

Sorry I haven't responded yet. What I have seen so far makes perfect sense. I'll
do a more careful review later.

[Ivan Posva, 2012-11-08 19:26:05]

LGTM -ip

https://codereview.chromium.org/11381003/diff/8001/sdk/bin/dart
File sdk/bin/dart (right):

https://codereview.chromium.org/11381003/diff/8001/sdk/bin/dart#newcode8
sdk/bin/dart:8: CUR_DIR="$(cd "${0%/*}" ; pwd -P)"
Empty line between figuring out the current directory and determining the
version?

https://codereview.chromium.org/11381003/diff/8001/sdk/bin/dart#newcode9
sdk/bin/dart:9: if [ -z "$DART_VERSION" ];
Unfortunately I have no better suggestion than a environment variable right now.

[ahe, 2012-11-09 16:37:05]

LGTM, thanks, Dan!

https://codereview.chromium.org/11381003/diff/8001/sdk/bin/dart
File sdk/bin/dart (right):

https://codereview.chromium.org/11381003/diff/8001/sdk/bin/dart#newcode9
sdk/bin/dart:9: if [ -z "$DART_VERSION" ];
On 2012/11/08 19:26:05, Ivan Posva wrote:
> Unfortunately I have no better suggestion than a environment variable right
now.

DART_CONFIGURATION?

[dgrove, 2012-11-09 23:04:30]

https://codereview.chromium.org/11381003/diff/8001/sdk/bin/dart
File sdk/bin/dart (right):

https://codereview.chromium.org/11381003/diff/8001/sdk/bin/dart#newcode8
sdk/bin/dart:8: CUR_DIR="$(cd "${0%/*}" ; pwd -P)"
On 2012/11/08 19:26:05, Ivan Posva wrote:
> Empty line between figuring out the current directory and determining the
> version?

Done.

https://codereview.chromium.org/11381003/diff/8001/sdk/bin/dart#newcode9
sdk/bin/dart:9: if [ -z "$DART_VERSION" ];
On 2012/11/09 16:37:05, ahe wrote:
> On 2012/11/08 19:26:05, Ivan Posva wrote:
> > Unfortunately I have no better suggestion than a environment variable right
> now.
> 
> DART_CONFIGURATION?

I went with DART_CONFIGURATION.