Add --dsym switch to enable dsym generation when building with Xcode

[David Kilzer (:ddkilzer)]

Created attachment 86387 [details]
Patch

Reviewed by NOBODY (OOPS!).

* Scripts/build-webkit: Updated usage statement to include
--dsym.
* Scripts/webkitdirs.pm: Added $generateDsym variable.
(generateDsym): Added. Call determineGenerateDsym() and
return $generateDsym.
(determineGenerateDsym): Added.  Parse @ARGV for --dsym and set
$generateDsym.
(argumentsForXcode): Added.  Returns additional arguments for
xcodebuild based on command-line switches.
(XcodeOptions): Updated to include argumentsForXcode() in the
array returned.
---
 3 files changed, 40 insertions(+), 1 deletions(-)

[David Kilzer (:ddkilzer)]

<rdar://problem/9136759>

[Joseph Pecoraro]

Comment on attachment 86387 [details]
Patch

I notice some of the Perl functions do not use the optional "()" for empty
arguments. I'm happy with either style. Nice!

[David Kilzer (:ddkilzer)]

Committed r81690: <http://trac.webkit.org/changeset/81690>