hg: macosx-port/macosx-port/jdk: Unset CC/CXX inside the JObjc Xcode project

[astrange at apple.com]

Changeset: 3883cac5d4b5
Author:    astrange
Date:      2011-07-11 14:37 -0700
URL:       http://hg.openjdk.java.net/macosx-port/macosx-port/jdk/rev/3883cac5d4b5

Unset CC/CXX inside the JObjc Xcode project

Spaces behave differently in $CC in makefiles vs. xcodebuild,
so the build breaks if you use them.

! src/macosx/native/jobjc/build.xml